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Officially, what is typename for?
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Unfortunately, the compiler is not required to be psychic, and doesn't know whether T::sometype will end up referring to a type name or a static member of T. So, one uses typename to tell it:
template<class T> somefunction( T * arg )
{
typename T::sometype x; // works!
.
.
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Guaranteed lifetime of temporary in C++?
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litb's answer is accurate. The lifetime of the temporary object (also known as an rvalue) is tied to the expression and the destructor for the temporary object is called at the end of the full expression and when the destructor on StringBuffer is called, the destructor on m_buffer will also be c...
Passing an Array as Arguments, not an Array, in PHP
...ereferencing the array into the standard func($arg1, $arg2) manner. But now I'm lost on how to do it. I recall the manner of passing by reference, how to "glob" incoming parameters ... but not how to de-list the array into a list of arguments.
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How to pass argument to Makefile from command line?
..._key \
--start-at-task="$(AT)" \
-u vagrant playbook.yml
Now when I want to call it I just run something like:
AT="build assets" make provision
or just:
make provision in this case AT is an empty string
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How do you keep user.config settings across different assembly versions in .net?
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I know it's been awhile...
In a winforms app, just call My.Settings.Upgrade() before you load them. This will get the latest settings, whether the current version or a previous version.
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What's the hardest or most misunderstood aspect of LINQ? [closed]
...ks about or at least including LINQ in the context of C# . I'd like to know which topics are worth giving a fair amount of attention to, based on what people may find hard to understand, or what they may have a mistaken impression of. I won't be specifically talking about LINQ to SQL or the E...
Small Haskell program compiled with GHC into huge binary
... support for dynamic linking of both C and Haskell libraries. Most distros now distribute a version of GHC built to support dynamic linking of Haskell libraries. Shared Haskell libraries may be shared amongst many Haskell programs, without copying them into the executable each time.
At the time of...
Why array implements IList?
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Some time has passed since the original question. But now with .Net 4.5, there are additional interfaces IReadOnlyList and IReadOnlyCollection.
– Tobias
Apr 8 '15 at 12:16
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Is it correct to use JavaScript Array.sort() method for shuffling?
...ading the section on poor implementations of shuffling in general, so you know what to avoid.
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What's so wrong about using GC.Collect()?
...that respectable programmers wouldn't ever use, even those who don't even know what it is for.
20 Answers
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