大约有 41,000 项符合查询结果（耗时：0.0587秒） [XML]
Library? Static? Dynamic? Or Framework? Project inside another project
...d a large chunk of code that I've been developing as another project just for ease of testing. The new chunk basically deals with saving an image to various sharing services, etc.. Because that sharing code needs a lot of testing and future updating, I was wondering what the best way to incorporate ...
What is the Ruby (spaceship) operator?
What is the Ruby <=> (spaceship) operator? Is the operator implemented by any other languages?
6 Answers
...
What does the CSS rule “clear: both” do?
...
I won't be explaining how the floats work here (in detail), as this question generally focuses on Why use clear: both; OR what does clear: both; exactly do...
I'll keep this answer simple, and to the point, and will explain to you graphically why clear: both; is...
Bash if [ false ] ; returns true
...
The idea of false being a command, or even a string, seems odd to me, but I guess it works. Thanks.
– tenmiles
Oct 29 '13 at 22:20
34
...
Which is more efficient, a for-each loop, or an iterator?
...read all of the values, then there is no difference between using an iterator or the new for loop syntax, as the new syntax just uses the iterator underwater.
If however, you mean by loop the old "c-style" loop:
for(int i=0; i<list.size(); i++) {
Object o = list.get(i);
}
Then the new for ...
Replace a value if null or undefined in JavaScript
I have a requirement to apply the ?? C# operator to JavaScript and I don't know how.
Consider this in C#:
5 Answers
...
#include in .h or .c / .cpp?
When coding in either C or C++, where should I have the #include 's?
4 Answers
4
...
What's so wrong about using GC.Collect()?
...gh I do understand the serious implications of playing with this function (or at least that's what I think), I fail to see why it's becoming one of these things that respectable programmers wouldn't ever use, even those who don't even know what it is for.
...
How to “test” NoneType in python?
... can I question a variable that is a NoneType? I need to use if method, for example
7 Answers
...
What exactly is a reentrant function?
...ly executed concurrently, does it always mean that it is reentrant?
No.
For example, let's have a C++ function that takes both a lock, and a callback as a parameter:
#include <mutex>
typedef void (*callback)();
std::mutex m;
void foo(callback f)
{
m.lock();
// use the resource pro...