大约有 43,000 项符合查询结果（耗时：0.0603秒） [XML]
Hidden Features of C++? [closed]
No C++ love when it comes to the "hidden features of" line of questions? Figured I would throw it out there. What are some of the hidden features of C++?
...
What is the difference between an int and a long in C++?
...
It is implementation dependent.
For example, under Windows they are the same, but for example on Alpha systems a long was 64 bits whereas an int was 32 bits. This article covers the rules for the Intel C++ compiler on variable platforms. To summarize:
OS arch ...
Function in JavaScript that can be called only once
I need to create a function which can be executed only once, in each time after the first it won't be executed. I know from C++ and Java about static variables that can do the work but I would like to know if there is a more elegant way to do this?
...
How to make Visual Studio copy a DLL file to the output directory?
...al DLL file. How can I make Visual Studio copy this DLL file automatically into the output directory (debug/release) when I build the project?
...
Which characters are valid/invalid in a JSON key name?
Are there any forbidden characters in key names, for JavaScript objects or JSON strings? Or characters that need to be escaped?
...
How often should you use git-gc?
...
It depends mostly on how much the repository is used. With one user checking in once a day and a branch/merge/etc operation once a week you probably don't need to run it more than once a year.
With several dozen developers working on several dozen projects each checking in 2-3 times a day, you mi...
How to get JavaScript caller function line number? How to get JavaScript caller source URL?
I am using the following for getting the JavaScript caller function name:
15 Answers
1...
Assigning code to a variable
Is it possible to make a variable, and assign a line of code to it, such as:
5 Answers
...
How does free know how much to free?
In C programming, you can pass any kind of pointer you like as an argument to free, how does it know the size of the allocated memory to free? Whenever I pass a pointer to some function, I have to also pass the size (ie an array of 10 elements needs to receive 10 as a parameter to know the size of t...
Match whitespace but not newlines
I sometimes want to match whitespace but not newline.
6 Answers
6
...