大约有 828 项符合查询结果（耗时：0.0240秒） [XML]
std::unique_lock or std::lock_guard?
...
If so, it would be invisible and undetectable. gcc-4.8 does it. wait(unique_lock<mutex>&) calls __gthread_cond_wait(&_M_cond, __lock.mutex()->native_handle()) (see libstdc++-v3/src/c++11/condition_variable.cc), which calls pthread_cond_wait() (see libgcc/...
brew install mysql on macOS
...ry/LaunchAgents]$ ls com.adobe.ARM.202f4087f2bbde52e3ac2df389f53a4f123223c9cc56a8fd83a6f7ae.plist com.mysql.mysqld.plist com.facebook.videochat.ava.plist homebrew.mxcl.postgresql.plist` under ` ~/Library/LaunchAgents` but unloading them gives launchctl: Couldn...
What is the direction of stack growth in most modern systems?
...
In C++ (adaptable to C) stack.cc:
static int
find_stack_direction ()
{
static char *addr = 0;
auto char dummy;
if (addr == 0)
{
addr = &dummy;
return find_stack_direction ();
}
else
{
return ((&...
Convert SVG image to PNG with PHP
... type="text/css">
#CA,#FL,HI{
fill:blue;
}
#Al, #NY, #NM{
fill:#cc6699;
}
/*etc..*/
</style>
and then you can do a single text replace to inject your css rules into the svg before proceeding with the imagick jpeg/png creation. If the colors don't change, check to make sure you don...
What is the difference between gmake and make?
..., or the make implementations of various commercial unixes.
The language accepted by GNU make is a superset of the one supported by the traditional make utility.
By using 'gmake' specifically you can use GNU make extensions without worrying about them being misinterpreted by some other make implem...
Cross-browser multi-line text overflow with ellipsis appended within a fixed width and height
...n nisi ligula, dapibus a volutpat sit amet, mattis et dui. Nunc porttitor accumsan orci id luctus. Phasellus ipsum metus, tincidunt non rhoncus id, dictum a lectus. Nam sed ipsum a lacus sodales eleifend. Vestibulum lorem felis, rhoncus elementum vestibulum eget, dictum ut velit. Nullam venenatis, e...
How to articulate the difference between asynchronous and parallel programming?
...am going to quote from Probabilistic models for concurrency of Daniele Varacca which is a good set of notes for theory of concurrency:
A model of computation is a model for concurrency when it is able to represent systems as composed of independent autonomous components, possibly communicating w...
How are feature_importances in RandomForestClassifier determined?
..., you can also find feature importances implemented as the "mean decrease accuracy". Basically, the idea is to measure the decrease in accuracy on OOB data when you randomly permute the values for that feature. If the decrease is low, then the feature is not important, and vice-versa.
(Note that b...
jQuery Ajax File Upload
...ling, false);
}
return myXhr;
},
success: function (data) {
// your callback here
},
error: function (error) {
// handle error
},
async: true,
data: formData,
cache: false,
content...
usr/bin/ld: cannot find -l
...
Thanks, this was helpful. For others using gcc to compile and link their program (rather than using ld directly), you can add -Xlinker --verbose to gcc's command-line arguments to have it pass this option to ld.
– user473305
Feb 1...