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What does a colon following a C++ constructor name do? [duplicate]
...constructed; if they have default constructors, those were already called. Now, if you assign a value to them in the body of the constructor, you are calling the copy assignment operator, which may mean releasing and reacquiring resources (e.g. memory) if the object has any.
So in the case of prim...
Why does changing 0.1f to 0 slow down performance by 10x?
...
@s73v3r That's a very good question. Now that I look at the assembly, not even + 0.0f gets optimized out. If I had to guess, it could be that + 0.0f would have side-effects if y[i] happened to be a signalling NaN or something... I could be wrong though.
...
How to autosize a textarea using Prototype?
...e seems to be pretty safe and nice.
None of the Facebook-using-newbies I know have ever mentioned anything about it or been confused. I'd use this as anecdotal evidence to say 'go ahead, implement it'.
Some JavaScript code to do it, using Prototype (because that's what I'm familiar with):
<!DO...
Default visibility of class methods in PHP
... public function __construct() {
$this -> age = 9; // age is now public
$this -> privateFunction();
}
private function privateFunction() {
$this -> country = "USA"; // this is also public
}
}
...
Is it possible to change only the alpha of a rgba background colour on hover?
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This is now possible with custom properties:
.brown { --rgb: 118, 76, 41; }
.green { --rgb: 51, 91, 11; }
a { display: block; position: relative; }
div { position: absolute; bottom: 0; background-color: rgba(var(--rgb), 0.8); }
a:h...
Read properties file outside JAR file
...re not absolute path hard code is is required . Both jar and property file now can be copied to any directory and run independently.
– Neil
Jan 9 '12 at 7:50
3
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Facebook API - How do I get a Facebook user's profile image through the Facebook API (without requir
...oted that in V2 of the graph api this no longer works using a username. So now you need the userid first, and you can no longer use a username to get this. Userid's also change per app, so you will have to have some kind of proper authentication to retrieve a userid you can use. Technically the prof...
SQL - using alias in Group By
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@MartinSmith only knew now that is a gotcha, will refrain from using that, thanks. Given that PostgreSQL allows that shortcut, they should give the alias a priority, otherwise they should not allow that shortcut at all.
– Mich...
How to make an OpenGL rendering context with transparent background?
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I know this is possible with Windows 7, not sure about earlier versions.
To get rid of the window border you need to remove the WS_OVERLAPPEDWINDOW style from the window and add the WS_POPUP style:
DWORD style = ::GetWindowLon...
How can I tell PyCharm what type a parameter is expected to be?
...documentation format for methods and their parameters so that PyCharm can know the type. Recent PyCharm version supports most common doc formats.
For example, PyCharm extracts types from @param style comments.
See also reStructuredText and docstring conventions (PEP 257).
Another option is Python...