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What's better at freeing memory with PHP: unset() or $var = null
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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,...
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...
Immutability of Strings in Java
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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
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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]
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– Konstantin Smolyanin
Aug 27 '13 at 20:02
1
This methods failed if we want to check the visibilit...
Placeholder in IE9
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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...
CSS selector by inline style attribute
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edited Mar 3 '17 at 14:20
answered Dec 8 '11 at 6:07
Bol...
What is __pycache__?
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Ekevoo
2,37311 gold badge2020 silver badges3030 bronze badges
answered Jun 1 '13 at 4:31
scott_fakenamescott_fakename
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How to compare times in Python?
...king the date into account:
>>> this_morning = datetime.datetime(2009, 12, 2, 9, 30)
>>> last_night = datetime.datetime(2009, 12, 1, 20, 0)
>>> this_morning.time() < last_night.time()
True
sha...
Rails raw SQL example
... = '1'").to_hash
# => [
{"first_name"=>"Rafael", "created_at"=>"2012-11-10 23:23:45.281189"},
{"first_name"=>"Eileen", "created_at"=>"2013-12-09 11:22:35.221282"}
]
Result object:
select_all returns a result object. You can do magic things with it.
result = Post.connection.sel...