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What are the most-used vim commands/keypresses?
...mmands preceded by : are executed on the command line at the bottom of the screen
:help help with any command
Navigation
Cursor movement: ←h ↓j ↑k l→
By words:
w next word (by punctuation); W next word (by spaces)
b back word (by punctuation); B back word (by spaces)
e end word (by pun...
android splash screen sizes for ldpi,mdpi, hdpi, xhdpi displays ? - eg : 1024X768 pixels for ldpi
I have to design splash screens(images that fit screen while loading) for android application using phonegap. I have to design 4 size images that fit for 4types of screens like ldpi, mdpi , hdpi, xhdpi . Can anyone tell me exact sizes in pixels for these screens so I can design in that size ?
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Notification click: activity already open
...that if you use this approach on the activity being launched from the home screen, then every time you launch the application will start with the root activity, destroying any activities that were previously displayed on top. This certainly is not an expected behavior for a user putting the app in b...
How can I get useful error messages in PHP?
Quite often I will try and run a PHP script and just get a blank screen back. No error message; just an empty screen. The cause might have been a simple syntax error (wrong bracket, missing semicolon), or a failed function call, or something else entirely.
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UICollectionView current visible cell index
... especially well when each item in your collection view takes up the whole screen.
Swift version
let visibleRect = CGRect(origin: collectionView.contentOffset, size: collectionView.bounds.size)
let visiblePoint = CGPoint(x: visibleRect.midX, y: visibleRect.midY)
let visibleIndexPath = collect...
Common CSS Media Queries Break Points [duplicate]
...gn flows well at each browser width, it should work pretty reliably on any screen size (and there are lots and lots of them out there.)
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Read only file system on Android
...adb
as a normal user:
adb shell
su
Grant root permissions on touch screen
mount
list all mount points that we have and we can see, in my case, that /dev/stl12 was mounted on /system as ro (ready only), so we just need do:
mount -o rw,remount /dev/stl12 /system
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Programmatically Request Access to Contacts
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Only black screen appear like app is frozen and when i close app i see alert of permission. Do you have an idea about why it is happening? this alert should be on app not under black screen.
– Yucel Bayram
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How Do You Clear The IRB Console?
How do you clear the IRB console screen?
21 Answers
21
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linux 下巧妙使用squid代理服务器 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...介
1.查看是否已安装squid
Red Hat Enterprise Linux 5安装程序默认没有安装Squid
服务，读者可以使用下面的命令检查系统是否已经安装了
Squid服务或查看已经安装了何种版本。
rpm -q squid
2.Squid代理服务的基本配置
2.1 Squid主配置...