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How to initialize std::vector from C-style array?
...you just need a one time initialization, you can put it in the constructor and use the two iterator vector constructor:
Foo::Foo(double* w, int len) : w_(w, w + len) { }
Otherwise use assign as previously suggested:
void set_data(double* w, int len)
{
w_.assign(w, w + len);
}
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Big-oh vs big-theta [duplicate]
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Big-O is an upper bound.
Big-Theta is a tight bound, i.e. upper and lower bound.
When people only worry about what's the worst that can happen, big-O is sufficient; i.e. it says that "it can't get much worse than this". The tighter the bound the better, of course, but a tight bound isn't...
How to add a custom right-click menu to a webpage?
...era 11.01, Firefox 3.6.13, Chrome 9, Safari 5 (all 4 via addEventListener) and IE 8 (attachEvent).
– Radek Benkel
Feb 5 '11 at 20:26
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Initializing a static std::map in C++
... implements these utilities is that it is neatly encapsulated in a library and the end user rarely needs to deal with the complexity.
– Steve Guidi
Nov 13 '09 at 18:09
45
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Where is Java's Array indexOf?
I must be missing something very obvious, but I've searched all over and can't find this method.
13 Answers
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Base64 encoding in SQL Server 2005 T-SQL
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The simplest and shortest way I could find for SQL Server 2012 and above is BINARY BASE64 :
SELECT CAST('string' as varbinary(max)) FOR XML PATH(''), BINARY BASE64
For Base64 to string
SELECT CAST( CAST( 'c3RyaW5n' as XML ).value('.',...
Purpose of returning by const value? [duplicate]
... this operation on a temporary. Imagine that + returned a non-const value, and you could write:
(a + b).expensive();
In the age of C++11, however, it is strongly advised to return values as non-const so that you can take full advantage of rvalue references, which only make sense on non-constant r...
Wait for a void async method
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Best practice is to mark function async void only if it is fire and forget method, if you want to await on, you should mark it as async Task.
In case if you still want to await, then wrap it like so await Task.Run(() => blah())
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Difference between std::result_of and decltype
I have some trouble understanding the need for std::result_of in C++0x. If I understood correctly, result_of is used to obtain the resulting type of invoking a function object with certain types of parameters. For example:
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What are paramorphisms?
...er , I'm stuck on paramorphisms. Unfortunately the section is quite thin, and the Wikipedia page doesn't say anything.
1 A...