大约有 10,700 项符合查询结果（耗时：0.0313秒） [XML]
When should I use perror(“…”) and fprintf(stderr, “…”)?
...
Calling perror will give you the interpreted value of errno, which is a thread-local error value written to by POSIX syscalls (i.e., every thread has it's own value for errno). For instance, if you made a call to open(), and...
CURL to access a page that requires a login from a different page
I have 2 pages: xyz.com/a and xyz.com/b . I can only access xyz.com/b if and only if I login to xyz.com/a first. If accessing xyz.com/b without going through the other, I simply get access denied (no redirect to login) via the browser. Once I login at xyz.com/a , I can access the other.
...
Why does an NSInteger variable have to be cast to long when used as a format argument?
...
You get this warning if you compile on OS X (64-bit), because on that platform NSInteger is defined as long and is a 64-bit integer. The %i format, on the other hand, is for int, which is 32-bit. So the format and the actual parameter do not match in size.
Since NSInteger is 32-b...
Declaring an enum within a class
In the following code snippet, the Color enum is declared within the Car class in order to limit the scope of the enum and to try not to "pollute" the global namespace.
...
How to inspect the return value of a function in GDB?
... 42;
}
int main( int argc, char *v[] ) {
fun();
return 0;
}
You can debug it as such --
(gdb) r
Starting program: /usr/home/hark/a.out
Breakpoint 1, fun () at test.c:2
2 return 42;
(gdb) finish
Run till exit from #0 fun () at test.c:2
main () at test.c:7
7 ...
How to git-svn clone the last n revisions from a Subversion repository?
...
@Zennichimaro: You can do that by adding another git-svn remote pointing at the same place and using git-svn fetch to get more of the tree. At that point you have to use git filter-branch to reparent the old (partial) tree onto the right branc...
Change Screen Orientation programmatically using a Button
I think this is implementable since screen rotation behaviour can go up to the application level.
5 Answers
...
Why does sys.exit() not exit when called inside a thread in Python?
... and I'm confused as to why the following code snippet would not exit when called in the thread, but would exit when called in the main thread.
...
What is the difference between Step Into and Step Over in the Eclipse debugger?
...your current instruction pointer (the line that will be executed next, indicated by ->) at the f(x) line in g(), having been called by the g(2) line in main():
public class testprog {
static void f (int x) {
System.out.println ("num is " + (x+0)); // <- STEP INTO
}
static...
Array include any value from another array?
...any? + include? may be faster as shown by Lee Jarvis' answer -- probably because & allocates a new Array while another solution does not and works as a simple nested loop to return a boolean.
share
|
...