大约有 40,000 项符合查询结果（耗时：0.0363秒） [XML]
Windows batch: formatted date into variable
... /f "skip=1" %%x in ('wmic os get localdatetime') do if not defined MyDate set MyDate=%%x
Then you can extract the individual parts using substrings:
set today=%MyDate:~0,4%-%MyDate:~4,2%-%MyDate:~6,2%
Another way, where you get variables that contain the individual parts, would be:
for /f %%x...
How to determine an interface{} value's “real” type?
... editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
...
What are Scala context and view bounds?
... editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
...
Retrieve the commit log for a specific line in a file?
...
You can get a set of commits by using pick-axe.
git log -S'the line from your file' -- path/to/your/file.txt
This will give you all of the commits that affected that text in that file. If the file was renamed at some point, you can add ...
c语言编程中%g是什么格式？ - C/C++ - 清泛网 - 专注C/C++及内核技术
...什么格式？%g用来输出实数，它根据数值的大小，自动选f格式或e格式（选择输出时占宽度较小的一种），且不输出无意义的0。即%g是根据结果自动选择科学...%g用来输出实数，它根据数值的大小，自动选f格式或e格式（选择输出...
Can code that is valid in both C and C++ produce different behavior when compiled in each language?
C and C++ have many differences, and not all valid C code is valid C++ code.
(By "valid" I mean standard code with defined behavior, i.e. not implementation-specific/undefined/etc.)
...
How can I link to a specific glibc version?
...
Setup 1: compile your own glibc without dedicated GCC and use it
Since it seems impossible to do just with symbol versioning hacks, let's go one step further and compile glibc ourselves.
This setup might work and is quick a...
What is the best way to ensure only one instance of a Bash script is running? [duplicate]
...
Use the set -o noclobber option and attempt to overwrite a common file.
A short example
if ! (set -o noclobber ; echo > /tmp/global.lock) ; then
exit 1 # the global.lock already exists
fi
# ... remainder of script ...
A lo...
How do I associate a Vagrant project directory with an existing VirtualBox VM?
...t is the name of the default virtual machine (if you're not using multi-VM setups).
If your VM has somehow become disassociated, what you can do is do VBoxManage list vms which will list every VM that VirtualBox knows about by its name and UUID. Then manually create a .vagrant file in the same dir...
Linux C/C++进程单实例互斥代码分享 - C/C++ - 清泛网 - 专注C/C++及内核技术
..._type = F_WRLCK; // 写文件锁定
fl.l_start = 0;
fl.l_whence = SEEK_SET;
fl.l_len = 0;
int ret = fcntl(fd, F_SETLK, &fl);
if (ret < 0) {
if (errno == EACCES || errno == EAGAIN) {
printf("%s already locked, error: %s\n", kPidFileName, strerror(errno));
close(fd);
exit(1);
...