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Should I use static_cast or reinterpret_cast when casting a void* to whatever
...a number of meanings, for all of which holds that “the mapping performed by reinterpret_cast is implementation-defined.” [5.2.10.3]
But in the particular case of casting from void* to T* the mapping is completely well-defined by the standard; namely, to assign a type to a typeless pointer witho...
Position: absolute and parent height?
...eeping the children as position: absolute, you could do so with JavaScript by finding the height of the absolutely positioned children after they have rendered, and using that to set the height of the parent.
Alternatively, just use float: left/float:right and margins to get the same positioning ef...
Listen for key press in .NET console app
...nstead of readLine() you lose the awesome feature of having history recall by pressing "up" key.
– v.oddou
Jul 1 '15 at 8:17
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Get item in the list in Scala?
...ly defined for some inputs) into a normal function (defined for any input) by basically wrapping the result in an Option.
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HashMap to return default value for non-found keys?
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[Update]
As noted by other answers and commenters, as of Java 8 you can simply call Map#getOrDefault(...).
[Original]
There's no Map implementation that does this exactly but it would be trivial to implement your own by extending HashMap:
p...
How should I detect unnecessary #include files in a large C++ project?
...ee: Visibility of template specialization of C++ function)
As pointed out by 'msalters', performing a full analysis of the code also allows for analysis of class usage. By checking how a class is used though a specific path of files, it is possible that the definition of the class (and therefore a...
Check orientation on Android phone
...esources().getConfiguration().orientation;
You can check for orientation by looking at its value:
int orientation = getResources().getConfiguration().orientation;
if (orientation == Configuration.ORIENTATION_LANDSCAPE) {
// In landscape
} else {
// In portrait
}
More information can be ...
PG undefinedtable error relation users does not exist
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At first, you shall detach all connections out of database. By default you use the development environment. Then try to reset database with the following:
rake db:reset
The rake db:reset task will drop the database and set it up again. This is functionally equivalent to rake db:...
How do I increase the cell width of the Jupyter/ipython notebook in my browser?
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On linux and osx at least, by default jupyter looks for a hidden directory called .jupyter for configuration files including customizations like the above. The above should be the only contents of the custom.css. See here for some more info: jupyter.r...
Ignore mouse interaction on overlay image
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Keep in mind that pointer-events isn't supported by all major browsers yet. IE doesn't support it (surprise...), and I think Safari doesn't support it either.
– Hatchmaster
Oct 9 '12 at 16:22
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