大约有 15,000 项符合查询结果（耗时：0.0322秒） [XML]
What are C++ functors and their uses?
...ate objects which "look like" a function:
// this is a functor
struct add_x {
add_x(int val) : x(val) {} // Constructor
int operator()(int y) const { return x + y; }
private:
int x;
};
// Now you can use it like this:
add_x add42(42); // create an instance of the functor class
int i = add4...
How to find the port for MS SQL Server 2008?
...port is 1433 but some how it is not listening at this port. The SQL is an Express edition.
13 Answers
...
How exactly does tail recursion work?
... answered Mar 20 '13 at 9:11
Alexey FrunzeAlexey Frunze
56.8k99 gold badges6767 silver badges154154 bronze badges
...
c++ boost::multi_index composite keys efficiency - c++1y / stl - 清泛IT社区，为创新赋能！
...ime reader first time poster! I'm playing around with the boost::multi_index container stuff and have a rather in-depth question that hopefully a boost or C++ container expert might know (my knowledge in C++ containers is pretty basic). For reference, the boost documentation on composite keys can be...
What is the C++ function to raise a number to a power?
... I recommend to read my comment before adding a comment. ;-) I explained that it DOES give an ambiguity. (Compiler of VS2008)
– Marvin
May 3 '13 at 10:28
1
...
What's the opposite of chr() in Ruby?
...
If String#ord didn't exist in 1.9, it does in 2.0:
"A".ord #=> 65
share
|
improve this answer
|
follow
...
Can you call Directory.GetFiles() with multiple filters?
... this will return all files in a string array and then filter that by the extensions you specify. That might not be a big issue if "C:\Path" doesn't have lot of files underneath it, but may be a memory/performance issue on "C:\" or something like that.
– Christian.K
...
Why does the C# compiler not fault code where a static method calls an instance method?
...'s new in C# 7.3, the section Improved overload candidates, item 1, it is explained how the overload resolution rules have changed so that non-static overloads are discarded early. So the below answer (and this entire question) has mostly only historical interest by now!
(Pre C# 7.3:)
For some r...
Circular (or cyclic) imports in Python
...raightforward really. Just remember the following:
'import' and 'from xxx import yyy' are executable statements. They execute
when the running program reaches that line.
If a module is not in sys.modules, then an import creates the new module
entry in sys.modules and then executes the ...
Variable name as a string in Javascript
...ly, yes - all properties of obj are printed as name: value pairs. But the explaining text could be more clear.
– Matt
Apr 20 '18 at 9:23
...