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Ruby class instance variable vs. class variable

...n store something common to that class without having sub-classes automatically also get them (and vice-versa). With class variables, you have the convenience of not having to write self.class from an instance object, and (when desirable) you also get automatic sharing throughout the class hierarchy...
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Understanding colors on Android (six characters)

... here you find all values : dtp-aus.com/hexadeci.htm and you can get alpha 0-100 by divide the number by 255 and multiple it by 100. hope it helps you – Niib Fouda Oct 17 '16 at 10:44 ...
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How can “while (i == i) ;” be a non-infinite loop in a single threaded application?

... its mathematically solid, why should one unreal number equal another? 5/0 != sqrt(-4) – Gordon Gustafson Sep 9 '09 at 1:11 ...
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Convert python datetime to epoch with strftime

...0.0 Why you should not use datetime.strftime('%s') Python doesn't actually support %s as an argument to strftime (if you check at http://docs.python.org/library/datetime.html#strftime-and-strptime-behavior it's not in the list), the only reason it's working is because Python is passing the info...
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Is it possible for a computer to “learn” a regular expression by user-provided examples?

...at most modern "regular expressions" used in programming languages are actually stronger than regular languages, and therefore sometimes harder to learn. share | improve this answer | ...
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Ruby sleep or delay less than a second?

...definitely extract the constant, and definitely not do it with the reason "all the performance you can get" – Blake Jul 29 '14 at 10:58 4 ...
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How to obtain the last path segment of a URI

...) and ended up here. If you're using that instead, there's a method there called getLastPathSegment() which should do the same thing. :) – pm_labs Mar 4 '13 at 4:19 5 ...
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What regex will match every character except comma ',' or semi-colon ';'?

... And the question doesn't specify whether adjacent separators are allowed, so the trailing '+' is slightly dubious. – Jonathan Leffler Sep 11 '09 at 6:26 ...
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SSH to Vagrant box in Windows?

... just use the proper solution, not workaround: there is my answer below. Small patch in Vagrant. – Michael Field Dec 4 '12 at 18:07 ...
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Installing CocoaPods: no response

Trying to install CocoaPods from the terminal: 6 Answers 6 ...