大约有 15,000 项符合查询结果（耗时：0.0220秒） [XML]
Preferred method to store PHP arrays (json_encode vs serialize)
... memory limit errors
$testArray = fillArray(0, 5);
// Time json encoding
$start = microtime(true);
json_encode($testArray);
$jsonTime = microtime(true) - $start;
echo "JSON encoded in $jsonTime seconds\n";
// Time serialization
$start = microtime(true);
serialize($testArray);
$serializeTime = micr...
Is there a JavaScript MVC (micro-)framework? [closed]
...bsite. I'd imagine those are only there to pacify the Rails fanboys. :) Start with the basic JQueryMX object model, and create a controller.
– Chris Jaynes
Aug 31 '11 at 2:41
1
...
Performing regex Queries with pymongo
...
Note also that regex's anchored at the start (ie: starting with ^) are able to use indexes in the db, and will run much faster in that case.
– drevicko
Aug 13 '13 at 23:31
...
git pull while not in a git directory
...
Starting git 1.8.5 (Q4 2013), you will be able to "use a Git command, but without having to change directories".
Just like "make -C <directory>", "git -C <directory> ..." tells Git to go there before doing any...
Is it possible to specify your own distance function using scikit-learn K-Means Clustering?
...kmeans a random sample of nsample ~ sqrt(N) from X
2) full kmeans, starting from those centres
"""
# merge w kmeans ? mttiw
# v large N: sample N^1/2, N^1/2 of that
# seed like sklearn ?
N, dim = X.shape
if nsample == 0:
nsample = max( 2*np.sqrt(N)...
Forward an invocation of a variadic function in C
...
/* Initialise the va_list variable with the ... after fmt */
va_start(myargs, fmt);
/* Forward the '...' to vprintf */
ret = vprintf(fmt, myargs);
/* Clean up the va_list */
va_end(myargs);
return ret;
}
This should give you the effect that you are looking for.
I...
Taking screenshot on Emulator from Android Studio
...
Starting with Android Studio 2.0 you can do it with the new emulator:
Just click 3 "Take Screenshot". Standard location is the desktop.
Or
Select "More"
Under "Settings", specify the location for your screenshot
Take your s...
Enum String Name from Value
...um.
[Code for Performance Benchmark]
Stopwatch sw = new Stopwatch (); sw.Start (); sw.Stop (); sw.Reset ();
double sum = 0;
int n = 1000;
Console.WriteLine ("\nGetName method way:");
for (int i = 0; i < n; i++) {
sw.Start ();
string t = Enum.GetName (typeof (Roles), roleValue);
sw.Stop...
How to close activity and go back to previous activity in android
I have a main activity, that when I click on a button, starts a new activity, i used the following code to do so:
18 Answer...
Sending data back to the Main Activity in Android
... from a list or entering data in a dialog box. In this case you should use startActivityForResult to launch your child Activity.
This provides a pipeline for sending data back to the main Activity using setResult. The setResult method takes an int result value and an Intent that is passed back to t...