大约有 30,000 项符合查询结果（耗时：0.0345秒） [XML]
How does facebook, gmail send the real time notification?
...t + '/sub',
callback: function(msg){
// on server push
alert(msg.content);
}
});
icomet supports a wide range of Browsers and OSes, including Safari(iOS, Mac), IEs(Windows), Firefox, Chrome, etc.
sh...
How do you test running time of VBA code?
...p:
Public Declare Function GetTickCount Lib "kernel32.dll" () As Long
Sub testTimer()
Dim t As Long
t = GetTickCount
For i = 1 To 1000000
a = a + 1
Next
MsgBox GetTickCount - t, , "Milliseconds"
End Sub
after http://www.pcreview.co.uk/forums/grab-time-milliseconds-included-vba-t994765.html (as ...
How do I trim leading/trailing whitespace in a standard way?
...endp++ = *frontp++; }
*endp = '\0';
}
return str;
}
Test for correctness:
#include <stdio.h>
#include <string.h>
#include <ctype.h>
/* Paste function from above here. */
int main()
{
/* The test prints the following:
[nothing to trim] -> [nothin...
Rotation methods deprecated, equivalent of 'didRotateFromInterfaceOrientation'?
...ct) {
NSLog(@"User has rotated to portrait");
}
}
@end
I was testing on an iPhone in the simulator, but my print statements won't get run if I test using the iPad since the traitsCollection won't change.
This is strange because this is exactly what Apple recommends:
- (void) traitCol...
How to create a video from images with FFmpeg?
...-r 1/5 -i img%03d.png -c:v libx264 -vf "fps=25,format=yuv420p" out.mp4
I tested below parameters, it worked for me
"e:\ffmpeg\ffmpeg.exe" -r 1/5 -start_number 0 -i "E:\images\01\padlock%3d.png" -c:v libx264 -vf "fps=25,format=yuv420p" e:\out.mp4
below parameters also worked but it always skips ...
Is there an exponent operator in C#?
...
@Justas I just testing that on .NET Core 2.1 and Math.Pow is now faster than the suggested alternative implementation.
– bytedev
Dec 19 '18 at 11:19
...
Is it possible to install iOS 6 SDK on Xcode 5?
... in the iOS 7 simulator. If you want to see how it looks in the simulator, test on the iOS 6 simulator.
– Rob Napier
Sep 22 '13 at 22:51
1
...
How to run a PowerShell script from a batch file
...>>),
example:
@echo off
set WD=%~dp0
ECHO New-Item -Path . -Name "Test.txt" -ItemType "file" -Value "This is a text string." -Force > "%WD%PSHELLFILE.ps1"
ECHO add-content -path "./Test.txt" -value "`r`nThe End" >> "%WD%PSHELLFILE.ps1"
powershell.exe -ExecutionPolicy Bypass -File "...
How to write a multidimensional array to a text file?
...works fine
import numpy as np
x = np.arange(20).reshape((4,5))
np.savetxt('test.txt', x)
While the same thing would fail (with a rather uninformative error: TypeError: float argument required, not numpy.ndarray) for a 3D array:
import numpy as np
x = np.arange(200).reshape((4,5,10))
np.savetxt('tes...
Fast Linux File Count for a large number of files
...
The fastest way is a purpose-built program, like this:
#include <stdio.h>
#include <dirent.h>
int main(int argc, char *argv[]) {
DIR *dir;
struct dirent *ent;
long count = 0;
dir = opendir(argv[1]);
...