大约有 47,000 项符合查询结果（耗时：0.0476秒） [XML]
Get the date (a day before current time) in Bash
...
I found most are as suggested answer but -d switch is not found in Solaris's date
– conandor
Nov 11 '09 at 4:30
3
...
Simple way to create matrix of random numbers
...es in a given shape.
Create an array of the given shape and propagate it with random
samples from a uniform distribution over [0, 1).
>>> import numpy as np
>>> np.random.rand(2,3)
array([[ 0.22568268, 0.0053246 , 0.41282024],
[ 0.68824936, 0.68086462, 0.68541...
Add up a column of numbers at the Unix shell
... bc
is the shortest one I've found (from the UNIX Command Line blog).
Edit: added the - argument for portability, thanks @Dogbert and @Owen.
share
|
improve this answer
|
...
Single quotes vs. double quotes in C or C++
...e quotes identify a single character, while double quotes create a string literal. 'a' is a single a character literal, while "a" is a string literal containing an 'a' and a null terminator (that is a 2 char array).
In C++ the type of a character literal is char, but note that in C, the type of a c...
How can I switch themes in Visual Studio 2012
The Visual Studio 2012 offers two themes, Light and Dark. I want to switch the theme to Dark, but I'm not able to find any menus or options to do that.
...
jQuery.inArray(), how to use it right?
First time I work with jQuery.inArray() and it acts kinda strange.
20 Answers
20
...
How do I autoindent in Netbeans?
In eclipse you can click Ctrl + I at any line, and it'll automatically indent the line or group of lines according to the indentation scheme you chose in the settings.
...
Convert HashBytes to VarChar
... want to get the MD5 Hash of a string value in SQL Server 2005. I do this with the following command:
7 Answers
...
How to generate .json file with PHP?
...
Here is a sample code:
<?php
$sql="select * from Posts limit 20";
$response = array();
$posts = array();
$result=mysql_query($sql);
while($row=mysql_fetch_array($result)) {
$title=$row['title'];
$url=$row['url'];
$posts[] = array('title'=> $title, 'url'=> $url);
} ...
UIImagePickerController breaks status bar appearance
...
UIImagePickerController* imagePicker = [[UIImagePickerController alloc] init];
imagePicker.delegate = self;
and
- (void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated
{
[[UIApplication shar...