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What is the fastest way to check if a class has a function defined?

...tr() to get the attribute, and callable() to verify it is a method: invert_op = getattr(self, "invert_op", None) if callable(invert_op): invert_op(self.path.parent_op) Note that getattr() normally throws exception when the attribute doesn't exist. However, if you specify a default value (None...
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What is the use of having destructor as private?

...e connection being open or a file being written. You could have a "request_delete" method in the class or the manager that will check that condition and it will either delete or decline, and return a status telling you what it did. That's far more flexible that just calling "delete". ...
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How can I get all the request headers in Django?

... Manoj GovindanManoj Govindan 60.6k2121 gold badges119119 silver badges129129 bronze badges ...
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Why does sudo change the PATH?

... Braiam 4,2521111 gold badges4545 silver badges6868 bronze badges answered Nov 3 '08 at 0:51 pixelbeatpixelbeat ...
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How to use ng-repeat without an html element

...or object before each element and iterate the new var: <div class="c477_group"> <div class="c477_group_item" ng-repeat="item in itemsWithSeparator" ng-switch="item.id" ng-class="{'-divider' : item.id == 'SEPARATOR'}"> <div class="c478" ng-switch-when="FAS"/> <div class="c4...
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Using multiple arguments for string formatting in Python (e.g., '%s … %s')

... | edited Dec 30 '13 at 21:02 Mark Cidade 92k3131 gold badges215215 silver badges229229 bronze badges ...
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How to delete last item in list?

... David Nogueira 1941212 bronze badges answered Aug 11 '13 at 8:10 sebastiansebastian 3,29022 gold ...
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Visual Studio window which shows list of methods

... – Mariusz Pawelski Oct 10 '11 at 10:21 @ChrisF it seems that I cant't see that window in vs2012. How to enable it? ...
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Maven dependency for Servlet 3.0 API?

...scal ThiventPascal Thivent 524k126126 gold badges10121012 silver badges10991099 bronze badges 3 ...
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Check if URL has certain string with PHP

... | edited Feb 26 '15 at 21:17 aug 8,80266 gold badges6060 silver badges8181 bronze badges answered Aug...