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What underlies this JavaScript idiom: var self = this?

...in event handlers (especially in closures). Edit: Note that using self is now discouraged as window.self exists and has the potential to cause errors if you are not careful. What you call the variable doesn't particularly matter. var that = this; is fine, but there's nothing magic about the name....
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Does SQLAlchemy have an equivalent of Django's get_or_create?

... new record, it will raise IntegrityError. The whole thing gets messed up, now we don't know what actually happened and we get another error, that no record is found. – rajat Oct 8 '15 at 19:31 ...
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Is explicitly closing files important?

...ot good practice to leave your files open. In fact, in cpython 3 you will now get warnings that the system had to close files for you if you didn't do it. Moral: Clean up after yourself. :) share | ...
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How to get the name of the calling method?

... Now it seems to be caller_locations[0].label on Ruby 2.2.0 else you always have send_action result – brcebn Feb 16 '16 at 15:25 ...
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Mockito. Verify method arguments

...s(Object argument) { return thisObject.equals(argument); } } Now using your code you can update it to read... Object obj = getObject(); Mockeable mock= Mockito.mock(Mockeable.class); Mockito.when(mock.mymethod(obj)).thenReturn(null); Testeable obj = new Testeable(); obj.setMockeable(...
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Apache not starting on MAMP Pro

... Im facing the same issue now in OS X El Captain , i have upgraded to 3.0.7.3 but still cant run apache. Can anyone hel me . thanks – Delavega Oct 5 '15 at 4:47 ...
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Add a property to a JavaScript object using a variable as the name?

...hen we've had ES2016 and soon we'll have ES2017, they're on a yearly cycle now. – T.J. Crowder Apr 18 '17 at 16:06  |  show 3 more comments ...
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How can I return two values from a function in Python?

...... >> ret_val = test() >> print ret_val (r1, r2, r3, ....) now you can do everything you like with your tuple. share | improve this answer | follow ...
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How to use UIVisualEffectView to Blur Image?

...the blur to an image? I've been trying to figure out the code for a while now :( still new at obj c! 7 Answers ...
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Ruby Bundle Symbol not found: _SSLv2_client_method (LoadError)

...ng homebrew and I somehow managed to break everything. I can't do anything now, this is what I get when I try to do bundle install: ...