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Javascript: negative lookbehind equivalent?
...script regular expressions? I need to match a string that does not start with a specific set of characters.
12 Answers
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Failed to load the JNI shared Library (JDK)
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You need a 64-bit trio:
64-bit OS
64-bit Java
64-bit Eclipse
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Getting the last element of a list
...ist[-1] is the shortest and most Pythonic.
In fact, you can do much more with this syntax. The some_list[-n] syntax gets the nth-to-last element. So some_list[-1] gets the last element, some_list[-2] gets the second to last, etc, all the way down to some_list[-len(some_list)], which gives you the f...
How do I delete a Git branch locally and remotely?
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Executive Summary
$ git push -d <remote_name> <branch_name>
$ git branch -d <branch_name>
Note that in most cases the remote name is origin.
In such a case you'll have to use the command like so.
$ git push -d origin <bran...
Draw text in OpenGL ES
...ere's an easy way to render text on top of the rendered frame (like a HUD with the player´s score etc). The text would need to use a custom font also.
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Why is it faster to check if dictionary contains the key, rather than catch the exception in case it
...to be unwound etc.
On the other hand, accessing a value in a dictionary by its key is cheap, because it's a fast, O(1) operation.
BTW: The correct way to do this is to use TryGetValue
obj item;
if(!dict.TryGetValue(name, out item))
return null;
return item;
This accesses the dictionary only ...
Confused by python file mode “w+”
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Let's say you're opening the file with a with statement like you should be. Then you'd do something like this to read from your file:
with open('somefile.txt', 'w+') as f:
# Note that f has now been truncated to 0 bytes, so you'll only
# be able to re...
Python unit test with base and sub class
I currently have a few unit tests which share a common set of tests. Here's an example:
15 Answers
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Best way to create an empty object in JSON with PHP?
... an empty object, some might therefor say that your code is valid and that it's the method to use.
PHP: Objects - Manual
If a value of any other type is converted to an object, a new instance of the stdClass built-in class is created. If the value was NULL, the new instance will be empty.
.. but,...
Using the star sign in grep
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The asterisk is just a repetition operator, but you need to tell it what you repeat. /*abc*/ matches a string containing ab and zero or more c's (because the second * is on the c; the first is meaningless because there's nothing for it to repeat). If yo...