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What should every developer know about databases? [closed]

...s view. – jedd.ahyoung Apr 5 '11 at 20:55  |  show 1 more comment ...
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How to remove an element from a list by index

... 1820 Use del and specify the index of the element you want to delete: >>> a = [0, 1, 2, 3,...
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Hide options in a select list using jQuery

...m displayed text). – Sablefoste Nov 20 '12 at 16:34 add a comment  |  ...
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What's better at freeing memory with PHP: unset() or $var = null

... It was mentioned in the unset manual's page in 2009: unset() does just what its name says - unset a variable. It does not force immediate memory freeing. PHP's garbage collector will do it when it see fits - by intention as soon, as those CPU cycles aren't needed anyway,...
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git difftool, open all diff files immediately, not in serial

...ective one. – Woody Zenfell III Aug 20 '10 at 16:30 2 For use on Linux, with Git 2.x, I had to ma...
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Immutability of Strings in Java

... | edited Jun 20 at 9:12 Community♦ 111 silver badge answered Oct 12 '09 at 7:04 ...
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Android equivalent to NSNotificationCenter

... | edited Jun 20 at 9:12 Community♦ 111 silver badge answered Jan 16 '12 at 2:42 ...
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How do I check if an element is really visible with JavaScript? [duplicate]

... – Konstantin Smolyanin Aug 27 '13 at 20:02 1 This methods failed if we want to check the visibilit...
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Placeholder in IE9

... 20 You have to be careful with this code since if you submit the form, the placeholder value will be submitted as a form value. Should clear i...
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What is __pycache__?

... Ekevoo 2,37311 gold badge2020 silver badges3030 bronze badges answered Jun 1 '13 at 4:31 scott_fakenamescott_fakename ...