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<!----> <!----> <div class="col-sm-3 col-md-2 col-lg-1 col-12" data-v-145a8bfc data-v-145a8bfc><div itemscope="itemscope" itemtype="http://schema.org/Person" class="avatar text-center" data-v-145a8bfc><div><div class="v-avatar" style="height:50px;min-width:50px;width:50px;"><div aria-label="brisa" role="img" class="v-image v-responsive theme--light"><div class="v-image__image v-image__image--preload v-image__image--cover" style="background-image:;background-position:center center;"></div><div class="v-responsive__content"></div></div></div></div> <p class="my-0 caption">Member</p> <div><a href="/profile/brisa" class="d-inline-flex"><p itemprop="name" class="subtitle-2 mb-0"> brisa </p></a></div> <!----></div></div> <div class="col-sm-9 col-md-10 col-lg-11 col-12" data-v-145a8bfc data-v-145a8bfc><div class="pt-0 col col-12" data-v-145a8bfc data-v-145a8bfc><span class="caption" data-v-145a8bfc>by <a href="/profile/brisa" class="d-inline-flex caption" data-v-145a8bfc> brisa </a></span>, <span class="caption" data-v-145a8bfc>2 years ago</span></div> <div class="forum-text ql-viewer" data-v-145a8bfc><p><span class="mention"><span><span class="mention"><span><span><span class="ql-mention-denotation-char">@</span>deron</span></span></span> </span></span>You can use the push() function to add a new element to any array in Perl code:</p><p><br/></p><div style="color:#f8f8f2;background-color:#272822;"><table style="border-spacing:0;padding:0;margin:0;border:0;"><tbody><tr><td style="vertical-align:top;padding:0;margin:0;border:0;"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;"><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f"> 1</span><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f"> 2</span><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f"> 3</span><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f"> 4</span><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f"> 5</span><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f"> 6</span><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f"> 7</span><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f"> 8</span><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f"> 9</span><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f">10</span></pre></td><td style="vertical-align:top;padding:0;margin:0;border:0;;width:100%"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;">@arr <span style="color:#f92672">=</span> (<span style="color:#ae81ff">1</span>, <span style="color:#ae81ff">2</span>, <span style="color:#ae81ff">3</span>); <span style="color:#75715e"># add element to an array</span>push(@arr, <span style="color:#ae81ff">4</span>); <span style="color:#75715e"># add one more element to an array</span>push(@arr, <span style="color:#ae81ff">5</span>); <span style="color:#66d9ef">print</span> <span style="color:#e6db74">"@arr"</span>;<span style="color:#75715e"># Output: 1 2 3 4 5</span></pre></td></tr></tbody></table></div><p><br/></p></div></div> <!----> <div class="text-center text-lg-left text-md-left text-xl-left text-sm-left col-sm-5 col-md-4 col-lg-2 col-xl-2 col-12" data-v-145a8bfc data-v-145a8bfc><div class="like-dislike-buttons pt-3" data-v-0348114a data-v-145a8bfc><span class="v-badge v-badge--overlap theme--light" data-v-0348114a><span draggable="false" class="v-chip v-chip--outlined theme--light v-size--default info info--text" data-v-0348114a><span class="v-chip__content"><div 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aria-orientation="horizontal" class="v-divider theme--light" data-v-145a8bfc></div></div></div><div tabindex="-1" role="listitem" class="v-list-item theme--light"><!----> <div class="row post-row" data-v-145a8bfc data-v-145a8bfc><div class="py-0 col col-12" data-v-145a8bfc data-v-145a8bfc><div data-v-145a8bfc><!----></div></div> <!----> <!----> <!----> <!----> <div class="col-sm-3 col-md-2 col-lg-1 col-12" data-v-145a8bfc data-v-145a8bfc><div itemscope="itemscope" itemtype="http://schema.org/Person" class="avatar text-center" data-v-145a8bfc><div><div class="v-avatar" style="height:50px;min-width:50px;width:50px;"><div aria-label="faustino.sanford" role="img" class="v-image v-responsive theme--light"><div class="v-image__image v-image__image--preload v-image__image--cover" style="background-image:;background-position:center center;"></div><div class="v-responsive__content"></div></div></div></div> <p class="my-0 caption">Member</p> <div><a href="/profile/faustino.sanford" class="d-inline-flex"><p itemprop="name" class="subtitle-2 mb-0"> faustino.sanford </p></a></div> <!----></div></div> <div class="col-sm-9 col-md-10 col-lg-11 col-12" data-v-145a8bfc data-v-145a8bfc><div class="pt-0 col col-12" data-v-145a8bfc data-v-145a8bfc><span class="caption" data-v-145a8bfc>by <a href="/profile/faustino.sanford" class="d-inline-flex caption" data-v-145a8bfc> faustino.sanford </a></span>, <span class="caption" data-v-145a8bfc>7 months ago</span></div> <div class="forum-text ql-viewer" data-v-145a8bfc><p><span class="mention"><span><span><span class="mention"><span><span><span class="ql-mention-denotation-char">@</span>deron</span></span></span> </span> </span></span></p><p>The push() function takes two arguments - the array you want to add elements to, and the element(s) you want to add. It appends the elements to the end of the array.</p><p><br/></p><p>In the example above, the array @arr initially contains the elements 1, 2, and 3. Then, we use the push() function twice.</p><p><br/></p><p>First, we add the element 4 to the array. Then, we add the element 5 to the array. Finally, we print the array using the print statement, which prints all the elements separated by spaces. 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class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Egreta.bartoletti\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003EIf you have multiple test cases that need a longer timeout, you can also set a global timeout for all test cases within a describe block by passing a fourth argument to the describe() function. This will override the default timeout for all test cases within that describe block:\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003E1\n2\n3\n4\n5\n6\n7\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003Edescribe('Long running tests', function() {\nthis.timeout(10000); \u002F\u002F Set timeout to 10 seconds for all test cases within this block\nit('should take a long time', function(done) {\nsetTimeout(done, 9000); \u002F\u002F 9 second delay\n});\n});\nIn this example, the describe() function sets a global timeout of 10 seconds for all test cases within that block. The individual test case then has a 9-second delay within it.\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003ERemember to be cautious when increasing timeouts as it may indicate that the test may need to be optimized for better performance. Long-running tests can lead to slower test execution times and potentially impact the overall efficiency of your test suite.\u003C\u002Fp\u003E",is_moderated:b,username:"eric.hamill",user_active:a,created:"2024-05-15T20:00:13Z"};ay.order=a;ay.description=w;ay.slug="javascript";az.id=34529;az.name=x;az.messages=1875;az.threads=1267;az.meta_title=x;az.meta_description=x;az.children=e;az.icon="category\u002Fc450d489-f776-42ad-a307-a876104daf91\u002Fsql.png";az.is_public=c;az.last_post={id:225021,message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Efrieda\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003EIn PostgreSQL, you can use the \u003Ccode\u003Eregexp_replace\u003C\u002Fcode\u003E function to remove a string between two characters. Here is an example:\u003C\u002Fp\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-z6hjmko\"\u003ESELECT regexp_replace('Hello (world)', '(.*)', '', 'g');\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EThis query will return the string "Hello" with the text between the parentheses removed. The first argument is the input string, the second argument is the regular expression pattern to match the text between parentheses, the third argument is an empty string to replace the matched text with, and the fourth argument 'g' specifies to replace all occurrences of the pattern in the input string.\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EYou can adjust the regular expression pattern to match the specific characters or pattern you want to remove from the input string.\u003C\u002Fp\u003E",is_moderated:b,username:"yasmeen",user_active:a,created:"2024-04-26T20:48:49Z"};az.order=a;az.description=x;az.slug="sql";aA.id=34530;aA.name=y;aA.messages=1365;aA.threads=980;aA.meta_title=y;aA.meta_description=y;aA.children=e;aA.icon="category\u002F6a57ef72-267d-44d0-b16f-0f5992a25150\u002Fgo2.png";aA.is_public=c;aA.last_post={id:210310,message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Eramon\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003EAlternatively, you can also use the strconv package to convert the float64 value to a string and then concatenate it with the original string. Here's an example:\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003E1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003Epackage main\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003Eimport (\n"fmt"\n"strconv"\n)\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003Efunc main() {\nmyString := "The float value is: "\nmyFloat := 3.14159\u003C\u002Fp\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-0i4q45m\"\u003E\u002F\u002F Convert float to string using strconv.FormatFloat\nfloatValue := strconv.FormatFloat(myFloat, 'f', 2, 64)\n\n\u002F\u002F Concatenate string and float\nresult := myString + floatValue\n\nfmt.Println(result)\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003E}\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EIn the above example, we import the strconv package and use the strconv.FormatFloat function to convert the float64 value to a string. The 'f' format parameter specifies that we want to format the float with decimal places. The '2' parameter specifies that we want to preserve 2 decimal places. The '64' parameter specifies the bit size of the float64 value.\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EAfter converting the float64 value to a string, we can concatenate it with the original string using the + operator and store the result in the result variable. The output of the above program will be:\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003E1\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EThe float value is: 3.14\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003ENote that when using strconv.FormatFloat, you have more control over the format of the float value string compared to fmt.Sprintf. You can adjust the number of decimal places by changing the second argument ('f') and adjust the bit size of the float64 value by changing the last argument (64).\u003C\u002Fp\u003E",is_moderated:b,username:"hailie",user_active:a,created:"2024-01-17T15:05:46Z"};aA.order=a;aA.description=y;aA.slug="golang";aB.id=34531;aB.name=z;aB.messages=1451;aB.threads=849;aB.meta_title=z;aB.meta_description=z;aB.children=e;aB.icon="category\u002Ff079ddf7-48d4-4aa3-b2b8-9bf568c958be\u002Fhtmlcss.png";aB.is_public=c;aB.last_post={id:209290,message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Echadrick_stanton\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003ETo avoid CORS (Cross-Origin Resource Sharing) errors when drawing an image onto a canvas, you need to ensure that:\u003C\u002Fp\u003E\u003Col\u003E\u003Cli\u003E\u003Cstrong\u003EServe the image from the same origin as your webpage\u003C\u002Fstrong\u003E: The image should be from the same domain, subdomain, and port as your web page. If the image is hosted on a different domain, you can either upload it to your own server or use a proxy server to fetch the image from the other domain and serve it from your own domain.\n\u003C\u002Fli\u003E\u003Cli\u003E\u003Cstrong\u003ESet the appropriate CORS headers on the server\u003C\u002Fstrong\u003E: If you are serving the image from a different domain, you need to configure the server to include the appropriate CORS headers in the response. The headers should allow the image to be requested from your domain.\n\u003C\u002Fli\u003E\u003C\u002Fol\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EHere's an example of how to set CORS headers in different server-side languages:\u003C\u002Fp\u003E\u003Cul\u003E\u003Cli\u003EExpress.js (Node.js):\u003C\u002Fli\u003E\u003C\u002Ful\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-6u48n45\"\u003Eapp.get('\u002Fimage', function(req, res) {\n res.set('Access-Control-Allow-Origin', '*'); \u002F\u002F Replace * with your domain\n res.sendFile(__dirname + '\u002Fpath\u002Fto\u002Fimage.jpg');\n});\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cul\u003E\u003Cli\u003EPHP:\u003C\u002Fli\u003E\u003C\u002Ful\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-bjtafvo\"\u003Eheader('Access-Control-Allow-Origin: *'); \u002F\u002F Replace * with your domain\nheader('Content-Type: image\u002Fjpeg');\nreadfile('\u002Fpath\u002Fto\u002Fimage.jpg');\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EBy serving the image from the same origin as your webpage or setting the appropriate CORS headers, you should be able to avoid CORS errors when drawing the image onto a canvas.\u003C\u002Fp\u003E",is_moderated:b,username:"beatrice.lesch",user_active:a,created:"2024-01-10T23:45:24Z"};aB.order=a;aB.description=z;aB.slug="html-css";aC.id=34532;aC.name=A;aC.messages=340;aC.threads=223;aC.meta_title=A;aC.meta_description=A;aC.children=e;aC.icon="category\u002F375757a5-d49a-485d-94fc-d28d725ae104\u002Fruby2.png";aC.is_public=c;aC.last_post={id:212726,message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Egideon.hauck\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003EIn addition to the code above, you can also use the \u003Ccode\u003Ecreate\u003C\u002Fcode\u003E method with a block to insert data into a database in a more concise way:\u003C\u002Fp\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-97jubfb\"\u003EArticle.create do |article|\n article.title = "My Article Title"\n article.content = "My Article Content"\nend\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EThis is especially useful when you want to perform additional actions or validations before saving the record.\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EYou can also use the \u003Ccode\u003Eimport\u003C\u002Fcode\u003E method to efficiently insert multiple records into the database at once. This method bypasses the lifecycle callbacks and validations, making it much faster than individual \u003Ccode\u003Ecreate\u003C\u002Fcode\u003E or \u003Ccode\u003Esave\u003C\u002Fcode\u003E operations. Here's an example:\u003C\u002Fp\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-9rl85ye\"\u003Earticles = [\n { title: "Article 1", content: "Content 1" },\n { title: "Article 2", content: "Content 2" },\n { title: "Article 3", content: "Content 3" }\n]\n\nArticle.import(articles)\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EThis will insert the specified records into the database without triggering validations or callbacks. However, keep in mind that the data directly goes into the database, so make sure it's properly sanitized and validated before using this method.\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003ERemember to configure your database connection in config\u002Fdatabase.yml file before inserting data into the database.\u003C\u002Fp\u003E",is_moderated:b,username:"hortense_donnelly",user_active:a,created:"2024-02-12T11:22:34Z"};aC.order=a;aC.description=A;aC.slug="ruby";aD.id=34533;aD.name=B;aD.messages=2887;aD.threads=2011;aD.meta_title=B;aD.meta_description=B;aD.children=e;aD.icon="category\u002F1c348406-1653-4887-b583-7489de2310f3\u002Fpython.png";aD.is_public=c;aD.last_post={id:228794,message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Emacie\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003EYou can change the text color in Matplotlib by setting the \u003Ccode\u003Ecolor\u003C\u002Fcode\u003E parameter when creating or plotting text. Here's an example:\u003C\u002Fp\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-8mmc59y\"\u003Eimport matplotlib.pyplot as plt\n\n# Create a plot\nplt.figure()\nplt.plot([1, 2, 3, 4], [1, 4, 9, 16])\n\n# Add text to the plot with a specific color\nplt.text(2, 8, 'Example Text', color='red')\n\nplt.show()\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EIn this example, the text 'Example Text' will be displayed in red on the plot. You can also set the color using the RGB values by passing a tuple of \u003Ccode\u003E(R, G, B)\u003C\u002Fcode\u003E values as the color parameter.\u003C\u002Fp\u003E",is_moderated:b,username:"kyra.strosin",user_active:a,created:"2024-05-15T20:03:08Z"};aD.order=a;aD.description=B;aD.slug="python";aE.id=34534;aE.name=C;aE.messages=1801;aE.threads=1143;aE.meta_title=C;aE.meta_description=C;aE.children=e;aE.icon="category\u002F3f08ec78-9350-4d01-9395-77978dfce7e1\u002Fjava.png";aE.is_public=c;aE.last_post={id:226311,message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Efranz\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003EIn Hibernate, you can define composite keys by using the \u003Ccode\u003E@IdClass\u003C\u002Fcode\u003E or \u003Ccode\u003E@EmbeddedId\u003C\u002Fcode\u003E annotations to represent two keys in a table.\u003C\u002Fp\u003E\u003Col\u003E\u003Cli\u003EUsing @IdClass annotation:\u003C\u002Fli\u003E\u003C\u002Fol\u003E\u003Cul\u003E\u003Cli\u003ECreate a separate class that represents the composite key by defining the two keys as attributes.\u003C\u002Fli\u003E\u003Cli\u003EAnnotate the entity class with @IdClass(YourKeyClass.class) and specify the key class as a value.\u003C\u002Fli\u003E\u003Cli\u003EAnnotate the two key attributes in the entity class with @Id.\u003C\u002Fli\u003E\u003C\u002Ful\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EExample:\u003C\u002Fp\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-0hcls83\"\u003E@IdClass(CompositeKey.class)\n@Entity\npublic class YourEntity {\n @Id\n private Long key1;\n @Id\n private Long key2;\n \u002F\u002F other attributes and methods\n}\n\npublic class CompositeKey {\n private Long key1;\n private Long key2;\n \u002F\u002F getters, setters, equals, and hashCode methods\n}\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Col\u003E\u003Cli\u003EUsing @EmbeddedId annotation:\u003C\u002Fli\u003E\u003C\u002Fol\u003E\u003Cul\u003E\u003Cli\u003ECreate a separate class that represents the composite key by defining the two keys as attributes and marking it with @Embeddable annotation.\u003C\u002Fli\u003E\u003Cli\u003EAnnotate the entity class with @Entity and annotate the key attribute with @EmbeddedId.\u003C\u002Fli\u003E\u003C\u002Ful\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EExample:\u003C\u002Fp\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-dniohgf\"\u003E@Embeddable\npublic class CompositeKey {\n private Long key1;\n private Long key2;\n \u002F\u002F getters, setters, equals, and hashCode methods\n}\n\n@Entity\npublic class YourEntity {\n @EmbeddedId\n private CompositeKey compositeKey;\n \u002F\u002F other attributes and methods\n}\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EBy using one of these approaches, you can define two keys in a Hibernate table as a composite key.\u003C\u002Fp\u003E",is_moderated:b,username:"noemi_sporer",user_active:a,created:"2024-05-08T10:16:12Z"};aE.order=a;aE.description=C;aE.slug="java";aF.id=34535;aF.name=D;aF.messages=985;aF.threads=764;aF.meta_title=D;aF.meta_description=D;aF.children=e;aF.icon="category\u002F427d0e6e-1883-44dd-aa69-96672f1362e5\u002Fc.png";aF.is_public=c;aF.last_post={id:225545,message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Esilas_gulgowski\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003ETo serialize an int in C++, you can convert it to a string and then write the string to a file or send it over a network connection. Here is an example of how to serialize an int to a file:\u003C\u002Fp\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-3gy7pi1\"\u003E#include <iostream>\n#include <fstream>\n\nint main() {\n int number = 42;\n \n \u002F\u002F Serialize int to a file\n std::ofstream file("data.txt");\n if (file.is_open()) {\n file << number;\n }\n file.close();\n \n return 0;\n}\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003ETo deserialize the int from the file and convert it back to an integer, you can read the string from the file and then convert it back to an int. Here is an example of how to deserialize the int from the file:\u003C\u002Fp\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-rcjbr0k\"\u003E#include <iostream>\n#include <fstream>\n\nint main() {\n int number;\n \n \u002F\u002F Deserialize int from a file\n std::ifstream file("data.txt");\n if (file.is_open()) {\n file >> number;\n }\n file.close();\n \n std::cout << "Deserialized number: " << number << std::endl;\n \n return 0;\n}\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EThis is a simple example of how to serialize and deserialize an int in C++. Depending on your specific requirements, you may need to use different serialization techniques such as binary serialization or using libraries like Boost.Serialization.\u003C\u002Fp\u003E",is_moderated:b,username:"hershel.jaskolski",user_active:a,created:"2024-05-01T13:07:48Z"};aF.order=a;aF.description=D;aF.slug="c-c";aG.id=34536;aG.name=E;aG.messages=654;aG.threads=531;aG.meta_title=E;aG.meta_description=E;aG.children=e;aG.icon="category\u002Fe1951c3a-5f15-4bff-b2a1-43f9148ea154\u002Fswift.png";aG.is_public=c;aG.last_post={id:227256,message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Egino.friesen\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003ETo set the map language in a Swift application, you can use the \u003Ccode\u003Elocale\u003C\u002Fcode\u003E parameter of the \u003Ccode\u003EMKMapView\u003C\u002Fcode\u003E class.\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EHere's an example of how to set the map language to a specific language in Swift:\u003C\u002Fp\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-7ehgi1m\"\u003Eimport MapKit\n\nlet mapView = MKMapView()\n\n\u002F\u002F Set the map language to a specific language\nmapView.locale = Locale(identifier: "fr") \u002F\u002F Set the language to French\n\n\u002F\u002F Add the mapView to your view hierarchy\n\u002F\u002F view.addSubview(mapView)\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EIn this example, we are setting the map language to French by setting the \u003Ccode\u003Elocale\u003C\u002Fcode\u003E property of the \u003Ccode\u003EmapView\u003C\u002Fcode\u003E to a \u003Ccode\u003ELocale\u003C\u002Fcode\u003E object with the identifier of "fr" (which represents French). You can replace "fr" with the language code of the language you want to set the map language to.\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EBy setting the map language using the \u003Ccode\u003Elocale\u003C\u002Fcode\u003E property, the map will be displayed in the specified language in the user interface elements such as street names, landmarks, and labels on the map.\u003C\u002Fp\u003E",is_moderated:b,username:"karelle_heathcote",user_active:a,created:"2024-05-11T17:41:12Z"};aG.order=a;aG.description=E;aG.slug="swift";aH.id=Z;aH.name=j;aH.messages=14775;aH.threads=10633;aH.meta_title=aI;aH.meta_description=aI;aH.children=e;aH.icon="category\u002F25bf8071-d225-4b00-add3-5ce12dedc414\u002Fic-2dev.png";aH.is_public=c;aH.last_post={id:228798,message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Ejermain\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003EIf you have an array of \u003Ccode\u003Echar**\u003C\u002Fcode\u003E, as a raw pointer to pointers to C strings, you can convert it to a \u003Ccode\u003EVec<String>\u003C\u002Fcode\u003E in Rust by leverage safe Rust code around unsafe FFI calls. Here is the complete code example:\u003C\u002Fp\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-yosssj2\"\u003Euse std::ffi::{CStr, CString};\nuse std::os::raw::{c_char, c_int};\nuse std::ptr;\n\n\nunsafe fn char_array_to_vec_of_strings(array: *mut *mut c_char) -> Vec<String> {\n let mut result = Vec::new();\n let mut index = 0;\n \n while !(*array.offset(index)).is_null() {\n let c_str = CStr::from_ptr(*array.offset(index));\n let str_slice = c_str.to_str().expect("Invalid UTF-8 sequence found in char** array");\n let string = String::from(str_slice);\n result.push(string);\n index += 1;\n }\n \n result\n}\n\nfn main() {\n \u002F\u002F Simulated char** array\n let c_string_1 = CString::new("Hello").expect("CString::new failed");\n let c_string_2 = CString::new("World").expect("CString::new failed");\n \n let mut array: [*mut c_char; 3] = [ptr::null_mut(); 3];\n array[0] = c_string_1.into_raw();\n array[1] = c_string_2.into_raw();\n array[2] = ptr::null_mut();\n \n let vec_result = unsafe { char_array_to_vec_of_strings(array.as_mut_ptr()) };\n \n for string in vec_result {\n println!("{}", string);\n }\n \n \u002F\u002F Don't forget to free the CString memory\n for i in 0..array.len() {\n if !array[i].is_null() {\n unsafe {\n CString::from_raw(array[i]);\n }\n }\n }\n}\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EIn this example, we first define the \u003Ccode\u003Echar_array_to_vec_of_strings\u003C\u002Fcode\u003E function that takes a \u003Ccode\u003E*mut *mut c_char\u003C\u002Fcode\u003E pointer and converts it into a \u003Ccode\u003EVec<String>\u003C\u002Fcode\u003E. Inside this function, we convert each C string pointer to a Rust \u003Ccode\u003EString\u003C\u002Fcode\u003E using \u003Ccode\u003ECStr\u003C\u002Fcode\u003E, \u003Ccode\u003Eto_str\u003C\u002Fcode\u003E, and \u003Ccode\u003EString::from\u003C\u002Fcode\u003E methods.\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EIn the \u003Ccode\u003Emain\u003C\u002Fcode\u003E function, we simulate a \u003Ccode\u003Echar**\u003C\u002Fcode\u003E array with two C strings, 'Hello' and 'World'. We convert this char array to a vector of strings using the function we defined and print them out. Lastly, we free the memory of the \u003Ccode\u003ECString\u003C\u002Fcode\u003Es to avoid memory leaks.\u003C\u002Fp\u003E",is_moderated:b,username:"lea_kunde",user_active:a,created:"2024-05-15T20:11:27Z"};aH.order=a;aH.description=j;aH.slug=al;return {layout:ak,data:[{sanitizedMessage:i,thread:{id:84211,name:i,message:"\u003Cp\u003EHow to add to an array in Perl?\u003C\u002Fp\u003E",formatted_message:d,image:"thread\u002F2022\u002F7016771d-dcd1-42b1-8ea8-d11c0ade493b.png",hash_tags:"[\"programming\",\"perl\",\"arrays\"]",tags:["programming","perl","arrays","mywebforum"],category:{id:Z,name:j,messages:a,threads:a,meta_title:d,meta_description:d,children:e,icon:d,is_public:c,order:a,description:j,slug:al},category_id:Z,slug:_,best_answer_id:am,likes:76,dislikes:a,is_closed:c,is_pinned:c,is_moderated:b,username:"deron",user_active:f,role:g,user_avatar:"avatar\u002Fderon\u002Fprikolnie-aviki-f-it-ru107.jpg",created:"2022-10-25T06:58:58Z"},relatedThreads:[{id:85211,title:an,text:an,avatar:"avatar\u002Fkelly\u002F2855.jpg",role:g,slug:"how-to-iterate-through-an-array-in-perl",username:"kelly",created:"2022-11-04T21:04:58Z"},{id:84948,title:ao,text:ao,avatar:"avatar\u002Fgino.friesen\u002F1584.jpg",role:g,slug:"how-to-sort-an-array-in-perl",username:"gino.friesen",created:"2022-11-02T16:38:58Z"},{id:84700,title:ap,text:ap,avatar:"avatar\u002Fcharles\u002F61-2.jpg",role:g,slug:"how-to-loop-through-an-array-in-perl",username:"charles",created:"2022-10-30T16:03:04Z"},{id:84415,title:aq,text:aq,avatar:"avatar\u002Forion\u002F43-2.jpg",role:g,slug:"how-to-declare-an-array-in-perl",username:"orion",created:"2022-10-27T03:21:09Z"},{id:84115,title:ar,text:ar,avatar:"avatar\u002Ftavares.willms\u002Favatar-98-s.jpg",role:g,slug:"how-to-print-an-array-in-perl",username:"tavares.willms",created:"2022-10-24T02:45:03Z"}],socialSettings:{id:1876,size:a,facebook:b,vk:c,ok:c,linkedin:b,telegram:b,whatsapp:b,pocket:c,twitter:b,active:b},page:f,totals:f,postsTotal:as,posts:[{id:am,message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Ederon\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003EYou can use the push() function to add a new element to any array in Perl code:\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-aco8t19irxo\" language=\"perl\"\u003E@arr = (1, 2, 3);\n\n# add element to an array\npush(@arr, 4);\n\n# add one more element to an array\npush(@arr, 5);\n\nprint "@arr";\n# Output: 1 2 3 4 5\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E",formatted_message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Ederon\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003EYou can use the push() function to add a new element to any array in Perl code:\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u002F\u003E\u003C\u002Fp\u003E\u003Cdiv style=\"color:#f8f8f2;background-color:#272822;\"\u003E\n\u003Ctable style=\"border-spacing:0;padding:0;margin:0;border:0;\"\u003E\u003Ctbody\u003E\u003Ctr\u003E\u003Ctd style=\"vertical-align:top;padding:0;margin:0;border:0;\"\u003E\n\u003Cpre tabindex=\"0\" style=\"color:#f8f8f2;background-color:#272822;\"\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E 1\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E 2\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E 3\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E 4\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E 5\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E 6\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E 7\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E 8\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E 9\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E10\n\u003C\u002Fspan\u003E\u003C\u002Fpre\u003E\u003C\u002Ftd\u003E\n\u003Ctd style=\"vertical-align:top;padding:0;margin:0;border:0;;width:100%\"\u003E\n\u003Cpre tabindex=\"0\" style=\"color:#f8f8f2;background-color:#272822;\"\u003E@arr \u003Cspan style=\"color:#f92672\"\u003E=\u003C\u002Fspan\u003E (\u003Cspan style=\"color:#ae81ff\"\u003E1\u003C\u002Fspan\u003E, \u003Cspan style=\"color:#ae81ff\"\u003E2\u003C\u002Fspan\u003E, \u003Cspan style=\"color:#ae81ff\"\u003E3\u003C\u002Fspan\u003E);\n\n\u003Cspan style=\"color:#75715e\"\u003E# add element to an array\u003C\u002Fspan\u003E\npush(@arr, \u003Cspan style=\"color:#ae81ff\"\u003E4\u003C\u002Fspan\u003E);\n\n\u003Cspan style=\"color:#75715e\"\u003E# add one more element to an array\u003C\u002Fspan\u003E\npush(@arr, \u003Cspan style=\"color:#ae81ff\"\u003E5\u003C\u002Fspan\u003E);\n\n\u003Cspan style=\"color:#66d9ef\"\u003Eprint\u003C\u002Fspan\u003E \u003Cspan style=\"color:#e6db74\"\u003E"@arr"\u003C\u002Fspan\u003E;\n\u003Cspan style=\"color:#75715e\"\u003E# Output: 1 2 3 4 5\u003C\u002Fspan\u003E\n\u003C\u002Fpre\u003E\u003C\u002Ftd\u003E\u003C\u002Ftr\u003E\u003C\u002Ftbody\u003E\u003C\u002Ftable\u003E\n\u003C\u002Fdiv\u003E\n\u003Cp\u003E\u003Cbr\u002F\u003E\u003C\u002Fp\u003E",is_moderated:b,likes:at,dislikes:a,thread_title:i,thread_slug:_,username:"brisa",user_avatar:"avatar\u002Fbrisa\u002F1606042124983.jpeg",user_active:f,role:g,role_logo:d,created:"2022-10-26T22:58:56Z"},{id:190021,message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Ederon\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003EThe push() function takes two arguments - the array you want to add elements to, and the element(s) you want to add. It appends the elements to the end of the array.\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EIn the example above, the array @arr initially contains the elements 1, 2, and 3. Then, we use the push() function twice.\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EFirst, we add the element 4 to the array. Then, we add the element 5 to the array. Finally, we print the array using the print statement, which prints all the elements separated by spaces. The output will be "1 2 3 4 5".\u003C\u002Fp\u003E",formatted_message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Ederon\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003EThe push() function takes two arguments - the array you want to add elements to, and the element(s) you want to add. It appends the elements to the end of the array.\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u002F\u003E\u003C\u002Fp\u003E\u003Cp\u003EIn the example above, the array @arr initially contains the elements 1, 2, and 3. Then, we use the push() function twice.\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u002F\u003E\u003C\u002Fp\u003E\u003Cp\u003EFirst, we add the element 4 to the array. Then, we add the element 5 to the array. Finally, we print the array using the print statement, which prints all the elements separated by spaces. The output will be "1 2 3 4 5".\u003C\u002Fp\u003E",is_moderated:b,likes:a,dislikes:a,thread_title:i,thread_slug:_,username:"faustino.sanford",user_avatar:"avatar\u002Ffaustino.sanford\u002F2232.jpg",user_active:f,role:g,role_logo:d,created:"2023-10-13T14:01:34Z"}]}],fetch:{},error:e,state:{loading:a,settings:{id:8542,name:k,domain:"devhubby.com",port:80,plan:f,plan_name:"free",footer_code:"\u003C!-- Global site tag (gtag.js) - Google Analytics --\u003E\n\u003Cscript async src=\"https:\u002F\u002Fwww.googletagmanager.com\u002Fgtag\u002Fjs?id=G-5LBS05BL1D\"\u003E\u003C\u002Fscript\u003E\n\u003Cscript\u003E\n window.dataLayer = window.dataLayer || [];\n function gtag(){dataLayer.push(arguments);}\n gtag('js', new Date());\n\n gtag('config', 'G-5LBS05BL1D');\n\u003C\u002Fscript\u003E\n\n\u003Cscript async src=\"https:\u002F\u002Fpagead2.googlesyndication.com\u002Fpagead\u002Fjs\u002Fadsbygoogle.js?client=ca-pub-4833888168110763\"\n 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