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Enabling error display in PHP via htaccess only
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C++ performance challenge: integer to std::string conversion
...lls to methods of std::string are not inlined, even if you specify /Ob2 in compiler options. So even something as trivial as a call to std::string::clear(), which you might expect to be very fast, can take 100 clockticks when linking CRT as a static library, and as much as 300 clockticks when linkin...
What do the following phrases mean in C++: zero-, default- and value-initialization?
...g up is a POD, or if it's a class that contains POD members and is using a compiler-generated default constructor.
In C++1998 there are 2 types of initialization: zero and default
In C++2003 a 3rd type of initialization, value initialization was added.
To say they least, it's rather c...
findViewByID returns null
... answered Jul 16 '10 at 12:07
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How to set an environment variable only for the duration of the script?
...s to run vblank_mode=0 glxgears. It works, but it also says vblank_mode=0: command not found after running, whereas prepending env doesn't cause this. [testing...] Apparently zsh doesn't like it (yet still uses it correctly), but bash is fine with it. I guess I'll go with the env method from now on....
How exactly does the python any() function work?
... generator expressions were added to Python, you would have created a list comprehension, which looks very similar, but with surrounding []'s: [x > 0 for x in lst]. From the lst containing [-1, -2, 10, -4, 20], you would get this comprehended list: [False, False, True, False, True]. This internal...
How find all unused classes in Intellij Idea?
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Press Ctrl+Shift+A (in Mac Command+Shift+A)
Enter "unused declar"
Double-click on "Unused declaration"
Settings will pop up
Click on Java/Declaration redundancy/Unused declaration
on the right bottom select "On the fly editor settings"
untick check...
How to add a second css class with a conditional value in razor MVC 4
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Of course it will as what's written here is not the complete code but rather the part of the code that is in question. Who knows how many other elements are in the div ;)
– von v.
Apr 16 '15 at 0:34
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mongo - couldn't connect to server 127.0.0.1:27017
I am coming from riak and redis where I never had an issue with this services starting, or to interact.
38 Answers
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Django ModelForm: What is save(commit=False) used for?
Why would I ever use save(commit=False) instead of just creating a form object from the ModelForm subclass and running is_valid() to validate both the form and model?
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