大约有 37,000 项符合查询结果(耗时:0.0608秒) [XML]
An “and” operator for an “if” statement in Bash
...US} is empty. It would probably be better to do:
if ! [ "${STATUS}" -eq 200 ] 2> /dev/null && [ "${STRING}" != "${VALUE}" ]; then
or
if [ "${STATUS}" != 200 ] && [ "${STRING}" != "${VALUE}" ]; then
It's hard to say, since you haven't shown us exactly what is going wrong wit...
How to count total lines changed by a specific author in a Git repository?
...
320
The output of the following command should be reasonably easy to send to script to add up the to...
?: operator (the 'Elvis operator') in PHP
...will leave foo unchanged.
Some more examples:
<?php
var_dump(5 ?: 0); // 5
var_dump(false ?: 0); // 0
var_dump(null ?: 'foo'); // 'foo'
var_dump(true ?: 123); // true
var_dump('rock' ?: 'roll'); // 'rock'
?>
By the way, it's called the Elvis operator.
...
How to loop through all but the last item of a list?
...
answered May 27 '09 at 9:04
freespacefreespace
15.1k33 gold badges3434 silver badges5555 bronze badges
...
Given an RGB value, how do I create a tint (or shade)?
Given an RGB value, like 168, 0, 255 , how do I create tints (make it lighter) and shades (make it darker) of the color?
3...
How does a UILabel's minimumScaleFactor work?
...
205
You need to set the label.adjustsFontSizeToFitWidth = YES;
...
Check that an email address is valid on iOS [duplicate]
...ng
{
BOOL stricterFilter = NO; // Discussion http://blog.logichigh.com/2010/09/02/validating-an-e-mail-address/
NSString *stricterFilterString = @"^[A-Z0-9a-z\\._%+-]+@([A-Za-z0-9-]+\\.)+[A-Za-z]{2,4}$";
NSString *laxString = @"^.+@([A-Za-z0-9-]+\\.)+[A-Za-z]{2}[A-Za-z]*$";
NSString *ema...
Convert RGBA PNG to RGB with PIL
...
130
Here's a version that's much simpler - not sure how performant it is. Heavily based on some djan...
SQL Server 2008 Windows Auth Login Error: The login is from an untrusted domain
When attempting to connect to a SQL Server 2008 Instance using Management Studio, I get the following error:
35 Answers
...
Definition of a Balanced Tree
...|
edited Feb 5 '13 at 16:50
answered Feb 5 '13 at 16:30
com...