{"id":72132,"date":"2015-07-15T11:59:00","date_gmt":"2015-07-15T11:59:00","guid":{"rendered":"https:\/\/blogs.technet.microsoft.com\/heyscriptingguy\/2015\/07\/15\/powertip-find-references-to-uninitialized-variables-in-powershell\/"},"modified":"2019-02-18T09:46:59","modified_gmt":"2019-02-18T16:46:59","slug":"powertip-find-references-to-uninitialized-variables-in-powershell","status":"publish","type":"post","link":"https:\/\/devblogs.microsoft.com\/scripting\/powertip-find-references-to-uninitialized-variables-in-powershell\/","title":{"rendered":"PowerTip: Find References to Uninitialized Variables in PowerShell"},"content":{"rendered":"<p><b style=\"font-size:12px\">Summary<\/b><span style=\"font-size:12px\">: Easily find references to uninitialized variables in Windows PowerShell.<\/span><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/devblogs.microsoft.com\/wp-content\/uploads\/sites\/29\/2019\/02\/q-for-powertip.jpg\" alt=\"Hey, Scripting Guy! Question\" \/>&nbsp;My extremely long script keeps failing and I suspect it may be because of variables that are not <br \/>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;initialized prior to being used. How can I find uninitialized variables?<\/p>\n<p style=\"margin-left:30px\"><img decoding=\"async\" src=\"https:\/\/devblogs.microsoft.com\/wp-content\/uploads\/sites\/29\/2019\/02\/a-for-powertip.jpg\" alt=\"Hey, Scripting Guy! Answer\" \/>&nbsp;Use the&nbsp;<b>Set-StrictMode<\/b>&nbsp;cmdlet and set it to&nbsp;<b>&ndash;version 1<\/b>&nbsp;to ensure that all references to&nbsp;<br \/>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;initialized variables generate an error:<\/p>\n<p style=\"margin-left:150px\">Set-StrictMode &ndash;version 1<\/p>\n<p style=\"margin-left:30px\"><img decoding=\"async\" src=\"https:\/\/devblogs.microsoft.com\/wp-content\/uploads\/sites\/29\/2019\/02\/7610.Dr.ScriptoForTips.jpg\" alt=\" \" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Summary: Easily find references to uninitialized variables in Windows PowerShell. &nbsp;My extremely long script keeps failing and I suspect it may be because of variables that are not &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;initialized prior to being used. How can I find uninitialized variables? &nbsp;Use the&nbsp;Set-StrictMode&nbsp;cmdlet and set it to&nbsp;&ndash;version 1&nbsp;to ensure that all references [&hellip;]<\/p>\n","protected":false},"author":596,"featured_media":87096,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[356,3,45],"class_list":["post-72132","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-scripting","tag-powertip","tag-scripting-guy","tag-windows-powershell"],"acf":[],"blog_post_summary":"<p>Summary: Easily find references to uninitialized variables in Windows PowerShell. &nbsp;My extremely long script keeps failing and I suspect it may be because of variables that are not &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;initialized prior to being used. How can I find uninitialized variables? &nbsp;Use the&nbsp;Set-StrictMode&nbsp;cmdlet and set it to&nbsp;&ndash;version 1&nbsp;to ensure that all references [&hellip;]<\/p>\n","_links":{"self":[{"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/posts\/72132","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/users\/596"}],"replies":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/comments?post=72132"}],"version-history":[{"count":0,"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/posts\/72132\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/media\/87096"}],"wp:attachment":[{"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/media?parent=72132"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/categories?post=72132"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/tags?post=72132"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}