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What's the difference between dependencies, devDependencies and peerDependencies in npm package.json
...oing to develop a package, you download it (e.g. via git clone), go to its root which contains package.json, and run:
npm install
Since you have the actual source, it is clear that you want to develop it, so by default, both dependencies (since you must, of course, run to develop) and devDependen...
How to apply specific CSS rules to Chrome only?
...uding the influenced browser,by that hack
WebKit hack:
.selector:not(*:root) {}
Google Chrome:All the versions
Safari:All the versions
Opera :14 and Later
Android:All the versions
Supports Hacks:
@supports (-webkit-appearance:none) {}
Google Chrome 28,and Google Chrome > 28, Opera 14 ...
SEH stack 结构探索（1）--- 从 SEH 链的最底层（线程第1个SEH结构）说起 -...
...TION_RECORD，即构造一个最底层的 SEH 结点
我们要看的是它如何构建 _EXCEPTION_REGISTRATION_RECORD 结构，我们最好准备纸笔记录下它的 stack 变化情况
1. ntdll32!_SEH_prolog4() 构造的 stack 结构
刚进入 ntdll32!_SEH_prolog4() 时的 stack 是下面的...
Open a new tab in gnome-terminal using command line [closed]
...
#!/bin/sh
WID=$(xprop -root | grep "_NET_ACTIVE_WINDOW(WINDOW)"| awk '{print $5}')
xdotool windowfocus $WID
xdotool key ctrl+shift+t
wmctrl -i -a $WID
This will auto determine the corresponding terminal and opens the tab accordingly.
...
9个常用iptables配置实例 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...-j ACCEPT
类似的，对于HTTP/HTTPS(80/443)、pop3(110)、rsync(873)、MySQL(3306)等基于tcp连接的服务，也可以参照上述命令配置。
对于基于udp的dns服务，使用以下命令开启端口服务：
iptables -A OUTPUT -p udp -o eth0 --dport 53 -j ACCEPT
iptables -A IN...
Auto-loading lib files in Rails 4
...problem:
in config/application.rb:
config.autoload_paths << Rails.root.join('lib')
and keep the right naming convention in lib.
in lib/foo.rb:
class Foo
end
in lib/foo/bar.rb:
class Foo::Bar
end
if you really wanna do some monkey patches in file like lib/extensions.rb, you may manua...
Deleting all files in a directory with Python
...be how to do so using just the os module...
def purgedir(parent):
for root, dirs, files in os.walk(parent):
for item in files:
# Delete subordinate files
filespec = os.path.joi...
java.net.UnknownHostException: Invalid hostname for server: local
...es this environment variable ($HOSTNAME) when it connects to the server.
[root@xyz ~]# echo $HOSTNAME
xyz
[root@xyz ~]# ping $HOSTNAME
ping: unknown host xyz
[root@xyz ~]# hostname -f
hostname: Unknown host
There are dozens of things that can cause this. Please comment if you discover a new re...
iPhone App Minus App Store?
... Email address field.
Click Continue until complete.
You should see "This root certificate is not trusted". This is expected.
Set the iPhone SDK to allow the self-signed certificate to be used:
sudo /usr/bin/sed -i .bak 's/XCiPhoneOSCodeSignContext/XCCodeSignContext/' /Developer/Platforms/iPhon...
How to redirect to previous page in Ruby On Rails?
...structions in Rails Guides, you can use:
redirect_back(fallback_location: root_path)
The 'back' location is pulled from the HTTP_REFERER header which is not guaranteed to be set by the browser. Thats why you should provide a 'fallback_location'.
...