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Why doesn't the example compile, aka how does (co-, contra-, and in-) variance work?
Following on from this question , can someone explain the following in Scala:
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Why does C++11's lambda require “mutable” keyword for capture-by-value, by default?
...a function object should produce the same result every time it's called. This is the difference between an object orientated function and a function using a global variable, effectively.
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C/C++ with GCC: Statically add resource files to executable/library
... or alternatively std::stringstream to make an iostream. std::stringstream is not great for this though and you can of course just use a pointer anywhere you can use an iterator.
If you're using this with automake don't forget to set BUILT_SOURCES appropriately.
The nice thing about doing it this...
Two submit buttons in one form
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answered Feb 13 '09 at 21:48
GregGreg
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How can I find out the total physical memory (RAM) of my linux box suitable to be parsed by a shell
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edited Nov 5 '14 at 12:33
Dummy00001
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What is the difference between ManualResetEvent and AutoResetEvent in .NET?
I have read the documentation on this and I think I understand. An AutoResetEvent resets when the code passes through event.WaitOne() , but a ManualResetEvent does not.
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What is the advantage of using abstract classes instead of traits?
What is the advantage of using an abstract class instead of a trait (apart from performance)? It seems like abstract classes can be replaced by traits in most cases.
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Nullable vs. int? - Is there any difference?
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No difference.
int? is just shorthand for Nullable<int>, which itself is shorthand for Nullable<Int32>.
Compiled code will be exactly the same whichever one you choose to use.
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Clojure: reduce vs. apply
... see all their arguments in the variable-arity case. When they are result-wise equivalent, I'd say that apply is always perfectly idiomatic, while reduce is equivalent -- and might shave off a fraction of a blink of an eye -- in a lot of the common cases. What follows is my rationale for believing t...
What should every developer know about databases? [closed]
...ases or may have to work with one someday. And considering the amount of misuse and abuse in the wild, and the volume of database-related questions that come up every day, it's fair to say that there are certain concepts that developers should know - even if they don't design or work with databases...