大约有 5,240 项符合查询结果（耗时：0.0294秒） [XML]
MySql Table Insert if not exist otherwise update
It works if the datenum exists, but I want to insert this data as a new row if the datenum does not exist.
3 Answers
...
What does 'const static' mean in C and C++?
I saw this in some code here on StackOverflow and I couldn't figure out what it does. Then I saw some confused answers on other forums. My best guess is that it's used in C to hide the constant foo from other modules. Is this correct? If so, why would anyone use it in a C++ context where you can j...
C++ error: undefined reference to 'clock_gettime' and 'clock_settime'
I am pretty new to Ubuntu, but I can't seem to get this to work. It works fine on my school computers and I don't know what I am not doing. I have checked usr/include and time.h is there just fine. Here is the code:
...
Use grep to report back only line numbers
I have a file that possibly contains bad formatting (in this case, the occurrence of the pattern \\backslash ). I would like to use grep to return only the line numbers where this occurs (as in, the match was here, go to line # x and fix it).
...
What's the fastest algorithm for sorting a linked list?
I'm curious if O(n log n) is the best a linked list can do.
13 Answers
13
...
Types in Objective-C on iOS
I want to ask about the fundamental data types in Objective-C on iOS.
3 Answers
3
...
Shortcut to open file in Vim
I want to open a file in Vim like in Eclipse using Ctrl + Shift + R , or via the Ctrl + N option of autofill. Invoke a keyboard shortcut, type the file name/pattern, and choose from all the matching files names.
...
bool to int conversion
How portable is this conversion. Can I be sure that both assertions pass?
4 Answers
4
...
Visual Studio Expand/Collapse keyboard shortcuts [duplicate]
In Visual Studio, if I have a code file open, I can press CTRL + M or CTRL + M + O to collapse all code blocks, regions, namespaces, etc.
...
Find and replace - Add carriage return OR Newline
In the case of following string to be parsed.
5 Answers
5
...