{"id":13538,"date":"2022-10-04T10:07:46","date_gmt":"2022-10-04T04:37:46","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-removealls-s-null-what-s-this-line-code-mean%ef%bc%9f\/"},"modified":"2022-10-04T10:07:46","modified_gmt":"2022-10-04T04:37:46","slug":"solved-removealls-s-null-what-s-this-line-code-mean%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-removealls-s-null-what-s-this-line-code-mean%ef%bc%9f\/","title":{"rendered":"[Solved] RemoveAll(s => s == null) What \u2018s this line code mean\uff1f"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-73017930\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"73017930\" data-parentid=\"73017417\" data-score=\"3\" data-position-on-page=\"1\" data-highest-scored=\"1\" data-question-has-accepted-highest-score=\"1\" itemprop=\"acceptedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\">\n<div class=\"post-layout\">\n<div class=\"votecell post-layout--left\"><\/div>\n<div class=\"answercell post-layout--right\">\n<div class=\"s-prose js-post-body\" itemprop=\"text\">\n<ol>\n<li>\n<blockquote>\n<p>What is this line code mean? <code>allhuman.RemoveAll(s =&gt; s == null);<\/code><\/p>\n<\/blockquote>\n<p>It removes all elements <code>s<\/code> for which the expression <code>s == null<\/code> returns <code>true<\/code>. Or in other words, all elements which fulfill the condition <code>== null<\/code>.<\/p>\n<p>In those expressions the <code>s<\/code> is like the iterator in <code>foreach(var s in allhuman)<\/code><\/p>\n<\/li>\n<li>\n<blockquote>\n<p>can I replace it to the following code?<\/p>\n<\/blockquote>\n<p>There is a mistake in your code since you <strong>remove elements from the list while iterating<\/strong> it. If you remove one element, next element gets the current index and will be skiped in the next iteration. Example: <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/dotnetfiddle.net\/CgWDh7\">https:\/\/dotnetfiddle.net\/CgWDh7<\/a><\/p>\n<pre><code>List&lt;object&gt; allhuman = new List&lt;object&gt;{null, null, 1};\nfor (int i = 0; i &lt; allhuman.Count; i++)\n{       \n    if (allhuman[i] == null)\n    {\n       allhuman.RemoveAt(i);\n    }\n}\n\nallhuman.ForEach(x =&gt; Console.WriteLine(x ?? \"null\"));\n<\/code><\/pre>\n<p>=&gt;<\/p>\n<pre><code>null\n1\n<\/code><\/pre>\n<\/li>\n<\/ol>\n<\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\">0<\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved RemoveAll(s => s == null) What \u2018s this line code mean\uff1f <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] What is this line code mean? allhuman.RemoveAll(s =&gt; s == null); It removes all elements s for which the expression s == null returns true. Or in other words, all elements which fulfill the condition == null. In those expressions the s is like the iterator in foreach(var s in allhuman) can I replace &#8230; <a title=\"[Solved] RemoveAll(s =&gt; s == null) What \u2018s this line code mean\uff1f\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-removealls-s-null-what-s-this-line-code-mean%ef%bc%9f\/\" aria-label=\"More on [Solved] RemoveAll(s =&gt; s == null) What \u2018s this line code mean\uff1f\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[324,538],"class_list":["post-13538","post","type-post","status-publish","format-standard","hentry","category-solved","tag-c","tag-unity3d"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Solved] RemoveAll(s =&gt; s == null) What \u2018s this line code mean\uff1f - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-removealls-s-null-what-s-this-line-code-mean\uff1f\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] RemoveAll(s =&gt; s == null) What \u2018s this line code mean\uff1f - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] What is this line code mean? allhuman.RemoveAll(s =&gt; s == null); It removes all elements s for which the expression s == null returns true. 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