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What does a colon following a C++ constructor name do? [duplicate]
...n be called with no parameters. This makes it a default constructor, i.e., one which will be called by default when you write MyClass someObject;.
The part : m_classID(-1), m_userdata(0) is called initialization list. It is a way to initialize some fields of your object (all of them, if you want) ...
How to name variables on the fly?
...dman I generate variable names for datasets I save in mypackage/data. Each one in its file with same name for the file and the data in it (given R recommendations for data in package). Each dataset is about 10M and the total is ~ 17Go I hardly see an other way.
– cmbarbu
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How to Unit test with different settings in Django?
...anism for overriding Django settings for a unit test? I have a manager on one of my models that returns a specific number of the latest objects. The number of objects it returns is defined by a NUM_LATEST setting.
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What does “to stub” mean in programming?
...programmer's "Lorem Ipsum".
Employee database not ready? Make up a simple one with Jane Doe, John Doe...etc.
API not ready? Make up a fake one by creating a static .json file containing fake data.
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Difference between getContext() , getApplicationContext() , getBaseContext() and “this”
...ess resources (e.g. openFileInput(), getString()), interact with other components (e.g. sendBroadcast(), registerReceiver()), requests permissions (e.g. checkCallingOrSelfPermission()) and resolving file system locations (e.g. getFilesDir()). ContextWrapper is really useful to work around device/ver...
Is it better to call ToList() or ToArray() in LINQ queries?
...tly to the number of elements.
To meet this constraint ToArray often does one more allocation than ToList. Once it has an array that is big enough it allocates an array which is exactly the correct size and copies the elements back into that array. The only time it can avoid this is when the grow...
Tools to make CSS sprites? [closed]
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this is the most intuitive one yet... thanks... (although, it should include the "smart" layout of sprites to minimize performance issues)
– kumarharsh
Aug 9 '12 at 20:02
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How to convert/parse from String to char in java?
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If your string contains exactly one character the simplest way to convert it to a character is probably to call the charAt method:
char c = s.charAt(0);
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Meaning of numbers in “col-md-4”,“ col-xs-1”, “col-lg-2” in Bootstrap
... screen size that class should apply:
xs = extra small screens (mobile phones)
sm = small screens (tablets)
md = medium screens (some desktops)
lg = large screens (remaining desktops)
Read the "Grid
Options"
chapter from the official Bootstrap documentation for more details.
You should ...
How to use multiple arguments for awk with a shebang (i.e. #!)?
...etty widespread, so you simply cannot rely on being able to pass more than one argument.
And since the location of commands is also not specified in POSIX or SUS, you generally use up that single argument by passing the executable's name to env so that it can determine the executable's location; e....