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How to compare variables to undefined, if I don’t know whether they exist? [duplicate]

... | edited Apr 23 '13 at 11:48 answered May 6 '10 at 7:00 ...
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PHP: Storing 'objects' inside the $_SESSION

... 133 I know this topic is old, but this issue keeps coming up and has not been addressed to my satis...
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HTTP URL Address Encoding in Java

... 305 The java.net.URI class can help; in the documentation of URL you find Note, the URI class ...
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Android: I am unable to have ViewPager WRAP_CONTENT

... 34 Answers 34 Active ...
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How do I get the current version of my iOS project in code?

... 388 You can get the version and build numbers as follows: let version = Bundle.main.object(forInf...
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What is sharding and why is it important?

... 193 Sharding is just another name for "horizontal partitioning" of a database. You might want to sea...
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How to crop an image using C#?

... answered Apr 9 '09 at 16:23 Daniel LeCheminantDaniel LeCheminant 47.3k1515 gold badges115115 silver badges113113 bronze badges ...
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Check if checkbox is checked with jQuery

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Cannot set boolean values in LocalStorage?

... implementation of Storage can only store strings, but on 2009 September, W3C modified the draft to accept any data. The implementation (still) isn't caught up yet (see Edit below). So in your case the boolean is converted to a string. As for why "true" != true, as written in the description of Eq...
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How to add a margin to a table row [duplicate]

... 3 To be more precise, <tr> cannot have margin values since CSS 2.1 but it could until CSS 2. I have never found the reason behind the ch...