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How to check if a variable is null or empty string or all whitespace in JavaScript?

... Whitespace can also include tabs, other kinds of spaces, etc. Use /^\s*$/ to catch those, too. – grant Aug 9 '13 at 0:26 2 ...
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One or more types required to compile a dynamic expression cannot be found. Are you missing referenc

...l: Same happened to me after upgrading a project from 4.0 to 4.5. Version#/etc is the same between 4.0/4.5 IIRC which might be the reason. – Steven Evers Aug 26 '13 at 22:50 13 ...
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How do you comment out code in PowerShell?

...e: Send-MailMessage -To bob@bob.com #This is a comment -Subject "Help Me!" etc. – CitizenRon May 25 '17 at 20:05 ...
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Error in plot.new() : figure margins too large in R

...y problem! I had expanded the "Environment" window, shrinking the "Plots", etc. window. I just had to expand the window. Thank you! – Rock Lee Nov 11 '14 at 22:21 ...
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In Subversion can I be a user other than my login name?

...s a better answer because it works for all SVN commands (checkout, commit, etc) where the --username flag seems to either be non-existant or slightly different for various commands... – edwardsharp Nov 3 '11 at 22:17 ...
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Xcode source automatic formatting

...ly does indentation. What about moving braces, taking care of line breaks, etc? – Peter Ajtai Apr 30 '12 at 0:56 15 ...
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Should Github be used as a CDN for javascript libraries? [closed]

...'s actual MIME type. In IE9 (and perhaps other browsers/proxies/firewalls/etc), JavaScript files that aren't served with the correct content-type are blocked by default. You can see that in action on the BlockUI demo page, for example: ...
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How can “while (i == i) ;” be a non-infinite loop in a single threaded application?

...ecause a calculation failed - eg square root of a negative, divide by zero etc - it makes no sense in comparing them against anything else. After all if divide by zero is a nan is it equivalent to the square root of -2 or square root of -3 ? Nan allows a calculation that includes a step that return...
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How to select last two characters of a string

... but is IE specific and does not have anything to do with Firefox, Safari, etc. – Matt May 24 '12 at 18:45 added the l...
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How can I remove the search bar and footer added by the jQuery DataTables plugin?

... example, if you want to show all the bits and pieces (paging, page-length etc.) except for the search box, you would add a dom property with a value of ltipr see datatables.net/reference/option/dom – onefootswill Sep 8 '19 at 3:16 ...