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Why are #ifndef and #define used in C++ header files?
...he header is included, it checks if a unique value (in this case HEADERFILE_H) is defined. Then if it's not defined, it defines it and continues to the rest of the page.
When the code is included again, the first ifndef fails, resulting in a blank file.
That prevents double declaration of any iden...
Can I use Objective-C blocks as properties?
... I didn't know that, thanks! ... Although I often do @synthesize myProp = _myProp
– Robert
Nov 8 '12 at 8:04
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Saving interactive Matplotlib figures
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This would be a great feature, but AFAIK it isn't implemented in Matplotlib and likely would be...
Access multiple elements of list knowing their index
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Alternatives:
>>> map(a.__getitem__, b)
[1, 5, 5]
>>> import operator
>>> operator.itemgetter(*b)(a)
(1, 5, 5)
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How to jump back to NERDTree from file in tab?
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PowerShell: Store Entire Text File Contents in Variable
...000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7256 4.91628 46.0943 5.50789C45.7307 4.9328 4...
PHP_SELF vs PATH_INFO vs SCRIPT_NAME vs REQUEST_URI
... address is, so it will know what to do with the navigation. I've used mod_rewrite , as per CodeIgniter documentation.
9 A...
Hidden Features of PHP? [closed]
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I agree. Being able to type www.php.net/function_name and getting a reference most of the time is great.
– Allain Lalonde
Sep 14 '08 at 17:46
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Multiple Models in a single django ModelForm?
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But how? Usually a FormView only has a single form_class assigned to it.
– erikbwork
Oct 7 '16 at 17:42
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?? Coalesce for empty string?
Something I find myself doing more and more is checking a string for empty (as in "" or null) and a conditional operator.
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