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Possible to do a MySQL foreign key to one of two possible tables?

... Bill KarwinBill Karwin 437k7777 gold badges585585 silver badges740740 bronze badges ...
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Google Play Services Library update and missing symbol @integer/google_play_services_version

When upgrading my project to the latest version of Google Play Services ( v4.0, released on Halloween 2013 ), you are now supposed to add a new tag into the AndroidManifest.xml file. ...
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Good NumericUpDown equivalent in WPF? [closed]

... Artur Carvalho 5,8041010 gold badges6060 silver badges8888 bronze badges answered Mar 17 '11 at 3:23 SamSam ...
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javascript: Clear all timeouts?

... answered Jan 14 '12 at 4:43 user123444555621user123444555621 123k2323 gold badges101101 silver badges120120 bronze badges ...
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How does `scp` differ from `rsync`?

... | edited Sep 30 '17 at 8:40 kmario23 34.9k1010 gold badges108108 silver badges116116 bronze badges answ...
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How to calculate the difference between two dates using PHP?

... it's rather easy to calculate different time periods. $date1 = "2007-03-24"; $date2 = "2009-06-26"; $diff = abs(strtotime($date2) - strtotime($date1)); $years = floor($diff / (365*60*60*24)); $months = floor(($diff - $years * 365*60*60*24) / (30*60*60*24)); $days = floor(($diff - $years * 365*60...
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What does a tilde do when it precedes an expression?

...For example, if your number was 1, its binary representation of the IEEE 754 float (how JavaScript treats numbers) would be... 0011 1111 1111 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 So ~ converts its operand to a 32 bit integer (bitwise operators in JavaScript do that)......
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PHP validation/regex for URL

...:<]|\.\s|$)#i', "'<a href=\"$1\" target=\"_blank\">$3</a>$4'", $text ); Most of the random junk at the end is to deal with situations like http://domain.com. in a sentence (to avoid matching the trailing period). I'm sure it could be cleaned up but since it worked. I've more or ...
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Android check internet connection [duplicate]

... 440 This method checks whether mobile is connected to internet and returns true if connected: pri...
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HTML tag want to add both href and onclick working

... 234 You already have what you need, with a minor syntax change: <a href="www.mysite.com" onclick...