大约有 16,000 项符合查询结果（耗时：0.0389秒） [XML]
Does PowerShell support constants?
I would like to declare some integer constants in PowerShell.
6 Answers
6
...
What is the point of noreturn?
...embly dump (-S -o - flags in coliru), indeed drops the "unreachable" code. Interestingly enough, -O1 is already enough to drop that unreachable code without the [[noreturn]] hint.
– TemplateRex
Aug 21 '13 at 13:23
...
How do you avoid over-populating the PATH Environment Variable in Windows?
...
This will parse your %PATH% environment variable and convert each directory to its shortname equivalent and then piece it all back together:
@echo off
SET MyPath=%PATH%
echo %MyPath%
echo --
setlocal EnableDelayedExpansion
SET TempPath="%MyPath:;=";"%"
SET var=
FOR %%a IN (...
What is the difference between packaged_task and async
...ask won't start on it's own, you have to invoke it:
std::packaged_task<int()> task(sleep);
auto f = task.get_future();
task(); // invoke the function
// You have to wait until task returns. Since task calls sleep
// you will have to wait at least 1 second.
std::cout << "You can see th...
Tree data structure in C#
...Build an AddChild method that takes care of all the minutia of these two points and any other business logic that must be implemented (child limits, sorting the children, etc.)
share
|
improve this ...
c++ boost::multi_index composite keys efficiency - c++1y / stl - 清泛IT社区，为创新赋能！
...will take O(n=1) time, i.e. is the container sorted such that there is a pointer directly to each item, or does the boost container retrieve a list that matches the first part of the composite key and then need to perform a search for items matching the second part of the key and thus is slower?For ...
Value Change Listener to JTextField
...Update(DocumentEvent e) {
warn();
}
public void warn() {
if (Integer.parseInt(textField.getText())<=0){
JOptionPane.showMessageDialog(null,
"Error: Please enter number bigger than 0", "Error Message",
JOptionPane.ERROR_MESSAGE);
}
}
});
...
Is it more efficient to copy a vector by reserving and copying, or by creating and swapping? [duplic
... you send the argument by reference. Did you mean
void copyVecFast(vec<int> original) // no reference
{
vector<int> new_;
new_.swap(original);
}
That would work, but an easier way is
vector<int> new_(original);
...
Inline functions in C#?
...
Finally in .NET 4.5, the CLR allows one to hint/suggest1 method inlining using MethodImplOptions.AggressiveInlining value. It is also available in the Mono's trunk (committed today).
// The full attribute usage is in mscorlib.dll,
// so should not need to include extr...
Is there a fixed sized queue which removes excessive elements?
...s with an exception. It would be best ( and quite simple ) to wrap a Queue into a class of your own for having the functionality you need.
Once again, because all queues are children of AbstractQueue, simply use that as your internal data type and you should have a flexible implementation running ...