大约有 30,000 项符合查询结果(耗时:0.0377秒) [XML]
How to format date and time in Android?
How to format correctly according to the device configuration date and time when having a year, month, day, hour and minute?
...
Execution time of C program
... parallel on several processors. I need to be able to record the execution time (which could be anywhere from 1 second to several minutes). I have searched for answers, but they all seem to suggest using the clock() function, which then involves calculating the number of clocks the program took di...
Metadata file '.dll' could not be found
....suo file that is next to the .sln file. (It will be re-generated the next time you Save all (or exit Visual Studio)).
I've had this problem when adding new projects to the solution on another machine and then pulling the revisions in, but the .suo file can be corrupted in other cases as well and l...
dynamic_cast and static_cast in C++
...o safely cast it to a pointer of type Type*. This cast is done at compile time. It will only perform the cast if the type types are related. If the types are not related, you will get a compiler error. For example:
class B {};
class D : public B {};
class X {};
int main()
{
D* d = new D;
B...
How to use clock() in C++
...
#include <iostream>
#include <cstdio>
#include <ctime>
int main() {
std::clock_t start;
double duration;
start = std::clock();
/* Your algorithm here */
duration = ( std::clock() - start ) / (double) CLOCKS_PER_SEC;
std::cout<<"printf: ...
How do I capture SIGINT in Python?
...it from your shell with the following contents to see what I mean:
import time, sys
x = 1
while True:
try:
print x
time.sleep(.3)
x += 1
except KeyboardInterrupt:
print "Bye"
sys.exit()
...
Java 8 Iterable.forEach() vs foreach loop
...epetition), and the fewer idioms are used the clearer the code is and less time is spent deciding which idiom to use (a big time-drain for perfectionists like myself!).
As you can see, I'm not a big fan of the forEach() except in cases when it makes sense.
Particularly offensive to me is the fact ...
How do you generate dynamic (parameterized) unit tests in python?
... '__main__' conditional? Surely it should go outside this to run at import time (remembering that python modules are only imported once even if imported from several different places)
– SpoonMeiser
Dec 21 '13 at 0:52
...
A monad is just a monoid in the category of endofunctors, what's the problem?
.... So f must be a constant function which just returns the same thing every time. () ("Unit") is the terminal object of the category Hask, and it's no coincidence that there is exactly 1 (non-divergent) value which inhabits it.
– Tom Crockett
Nov 1 '12 at 23:35
...
VB.NET equivalent to C# var keyword [duplicate]
... VS IDE you can just hover over the variable names, but to get the compile-time types of variables (GetType(variableName) does not compile - "Type '<variablename>' is not defined." - and VarType(variable) is actually just the VB version of variable.GetType() which returns the type of the insta...
