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PHP: How to remove all non printable characters in a string?
...to remove other chars...
If you're dealing with Unicode, there are potentially many non-printing elements, but let's consider a simple one: NO-BREAK SPACE (U+00A0)
In a UTF-8 string, this would be encoded as 0xC2A0. You could look for and remove that specific sequence, but with the /u modifier in ...
How can I quickly sum all numbers in a file?
...
For a Perl one-liner, it's basically the same thing as the awk solution in Ayman Hourieh's answer:
% perl -nle '$sum += $_ } END { print $sum'
If you're curious what Perl one-liners do, you can deparse them:
% perl -MO=Deparse -nle '$sum += $_ } END ...
Akka Kill vs. Stop vs. Poison Pill?
...fference between Akka Stop/Poison Pill vs. Kill ? The book offers just a small explaination "Kill is synchronous vs. Poison pill is asynchronous." But in what way? Does the calling actor thread lock during this time? Are the children actors notified during kill, post-stop envoked, etc? Example uses ...
Generating random whole numbers in JavaScript in a specific range?
...
It's only doing that because it's calling floor, which rounds down.
– Josh Stodola
Oct 6 '09 at 20:17
6
...
Linux下部署企业级邮件服务器(postfix + dovecot + extmail) - 开源 & Gith...
...ce sendmail stop
chkconfig sendmail off
3、配置编译环境，安装开发包组
yum groupinstall -y "Development Tools" "Development Libraries"
二、启动所需服务
1、安装启动mysql
mysql的安装具体过程这里不在详述，我的博客中其他文章中多次写出过。...
Client on node: Uncaught ReferenceError: require is not defined
... true when the browser window (where this HTML file is embedded) was originally created in the main process.
function createAddItemWindow() {
//Create new window
addItemWindown = new BrowserWindow({
width: 300,
height: 200,
title: 'Add Item',
//The lines below solved the issue
...
How to locate a file in Solution Explorer in Visual Studio 2010?
...
For VS2012+ @Aaron's answer is the best. No installing things Ctrl + [,s
– BritishDeveloper
Nov 2 '15 at 16:38
3
...
How to check that an element is in a std::set?
... Note that using count() instead of find() is never better but potentially worse. This is because find() will return after the first match, count() will always iterate over all elements.
– Frerich Raabe
Nov 9 '09 at 15:50
...
如何在Visual Studio中运行和调试汇编代码 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...
下断点，F5调试：
Ctrl + Alt + D切换反汇编视图：
vs 调试 汇编代码
Why is __init__() always called after __new__()?
... new instance.
__new__ is the first step of instance creation. It's called first, and is
responsible for returning a new
instance of your class.
In contrast,
__init__ doesn't return anything; it's only responsible for initializing the
instance after it's been created.
In ge...