大约有 43,000 项符合查询结果（耗时：0.0491秒） [XML]
How to prevent SIGPIPEs (or handle them properly)
...nnections on a TCP or local UNIX socket, reads a simple command and, depending on the command, sends a reply. The problem is that the client may have no interest in the answer sometimes and exits early, so writing to that socket will cause a SIGPIPE and make my server crash. What's the best practice...
C++ deprecated conversion from string constant to 'char*'
...s is an error message you see whenever you have a situation like the following:
char* pointer_to_nonconst = "string literal";
Why? Well, C and C++ differ in the type of the string literal. In C the type is array of char and in C++ it is constant array of char. In any case, you are not allowed to ...
Why is the gets function so dangerous that it should not be used?
...to compile C code that uses the gets() function with GCC, I get this warning:
11 Answers
...
How do I tokenize a string in C++?
...ms are pretty universally based around iterators rather than concrete containers. Unfortunately this makes it hard to provide a Java-like split function in the C++ standard library, even though nobody argues that this would be convenient. But what would its return type be? std::vector<std::basic_...
Can constructors throw exceptions in Java?
...ructed" object to stick around though, if it's made itself visible earlier in the constructor (e.g. by assigning a static field, or adding itself to a collection).
One thing to be careful of about throwing exceptions in the constructor: because the caller (usually) will have no way of using the new...
How do you prevent IDisposable from spreading to all your classes?
...
You can't really "prevent" IDisposable from spreading. Some classes need to be disposed, like AutoResetEvent, and the most efficient way is to do it in the Dispose() method to avoid the overhead of finalizers. But this method must be called somehow, so exactly as in your exa...
Return value in a Bash function
I am working with a bash script and I want to execute a function to print a return value:
9 Answers
...
How to copy to clipboard in Vim?
...le to copy to clipboard directly from Vim? yy only copies stuff to Vim's internal buffer. I want to copy to the OS's clipboard. Is there any such command in Vim or you can only yank stuff within Vim?
...
Concatenating Files And Insert New Line In Between Files
...
You can do:
for f in *.txt; do (cat "${f}"; echo) >> finalfile.txt; done
Make sure the file finalfile.txt does not exist before you run the above command.
If you are allowed to use awk you can do:
awk 'FNR==1{print ""}1' *.txt > f...
Javascript swap array elements
Is there any simpler way to swap two elements in an array?
31 Answers
31
...