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Comma in C/C++ macro
... remains parenthesized inside the macro expansion, which prevents it being read as a type in most contexts.
A nice trick to workaround this is that in C++, you can extract a typename from a parenthesized type name using a function type:
template<typename T> struct argument_type;
template<...
What exactly are unmanaged resources?
...up with memory leaks and locked resources.
Stolen from here, feel free to read the entire post.
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How do I keep track of pip-installed packages in an Anaconda (Conda) environment?
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Just to make this clear for future readers: the -pip: section flags all of the packages that were installed via pip. Also, to my knowledge, conda env export will never generate semvar matching values, like the -nodejs=0.10.* shown in this example. It will giv...
enum.values() - is an order of returned enums deterministic
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@Fletch, Earth is already closer to Sun than Mars ;-) but I get what you mean. However, in this case the order of planets is actually a function of their mean distance from Sun, which is not a simple ordinal, thus IMHO it should better be stored...
What's the difference between findAndModify and update in MongoDB?
...m first and then updates it. But why do I need to return the item first? I read the MongoDB: the definitive guide and it says that it is handy for manipulating queues and performing other operations that need get-and-set style atomicity. But I didn't understand how it achieves this. Can somebody e...
Parsing JSON from XmlHttpRequest.responseJSON
...h responseText and try like eval("("+req.responseText+")");
UPDATE:Please read the comment regarding eval, you can test with eval, but don't use it in working extension.
OR
use json_parse : it does not use eval
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Using {} in a case statement. Why?
...ROR
return a * x;
}
You will get a compiler error because x is already defined in the scope.
Separating these to their own sub-scope will eliminate the need to declare x outside the switch statement.
switch (a)
{
case 42: {
int x = GetSomeValue();
return a * x;
}...
Are multiple `.gitignore`s frowned on?
...d you can have different version of a .gitignore file per branch: I have already seen that kind of configuration for ensuring one branch ignores a file while the other branch does not: see this question for instance.
If your repo includes several independent projects, it would be best to reference ...
How to detect DIV's dimension changed?
...use the jQuery onresize plugin as it uses setTimeout() in combination with reading the DOM clientHeight/clientWidth properties in a loop to check for changes. This is incredible slow and inaccurate since it causes layout thrashing.
Disclosure: I am directly associated with this library.
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Node.js on multi-core machines
...miss something - isn't Node.js tuned only to run on a single process and thread?
15 Answers
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