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How to replace multiple white spaces with one white space
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imo, avoiding regex if your comfortable with them is premature optimization
– Tim Hoolihan
Aug 14 '09 at 20:05
8
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How do I install a module globally using npm?
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If you want to install a npm module globally, make sure to use the new -g flag, for example:
npm install forever -g
The general recommendations concerning npm module installation since 1.0rc (taken from blog.nodejs.org):
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How to make HTML Text unselectable [duplicate]
... this with plain vanilla HTML, so JSF can't do much for you here as well.
If you're targeting decent browsers only, then just make use of CSS3:
.unselectable {
-webkit-touch-callout: none;
-webkit-user-select: none;
-khtml-user-select: none;
-moz-user-select: none;
-ms-user-sel...
TypeError: not all arguments converted during string formatting python
The program is supposed to take in two names, and if they are the same length it should check if they are the same word. If it's the same word it will print "The names are the same" . If they are the same length but with different letters it will print "The names are different but the same length...
php execute a background process
...d to $pidfile.
That lets you easily monitor what the process is doing and if it's still running.
function isRunning($pid){
try{
$result = shell_exec(sprintf("ps %d", $pid));
if( count(preg_split("/\n/", $result)) > 2){
return true;
}
}catch(Exception ...
“Could not find bundler” error
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Make sure you're entering "bundle" update, if you have the bundler gem installed.
bundle update
If you don't have bundler installed, do gem install bundler.
share
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How to determine an interface{} value's “real” type?
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Your example does work. Here's a simplified version.
package main
import "fmt"
func weird(i int) interface{} {
if i < 0 {
return "negative"
}
return i
}
func main() {
var i = 42
if w, ok := weird(7).(int); ok {
i += w
...
Shell脚本编程30分钟入门 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...PHP等语言不一样，sh的流程控制不可为空，如：
<?php
if (isset($_GET["q"])) {
search(q);
}
else {
//do nothing
}
在sh/bash里可不能这么写，如果else分支没有语句执行，就不要写这个else。
还要注意，sh里的if [ $foo -eq 0 ]，这个方括...
Should we @Override an interface's method implementation?
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-1 until the answer includes a mention about the different behaviour from Java 1.5 to 1.6 with regards to implementing an interface method. Just because I've seen it be a confusing aspect for people and it really merits a mention.
– Grundlefleck
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How do I raise the same Exception with a custom message in Python?
...(type(e))+" with message " +e.message)
This will also do the right thing if err is derived from ValueError. For example UnicodeDecodeError.
Note that you can add whatever you like to err. For example err.problematic_array=[1,2,3].
Edit: @Ducan points in a comment the above does not work with ...