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Positioning MKMapView to show multiple annotations at once
...he annotations fine, but I want to resize the map to fit all annotations onscreen at once, and I'm not sure how to do this.
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项目管理实践教程二、源代码控制【Source Control Using VisualSVN Server ...
...itory：下的文本框中输入svn server中的代码库的地址，其他默认，点击OK按钮,就开始签出源代码了。
说明：上图中的Checkout Depth，有4个选项，分别是迁出全部、只签出下一级子目录和文件、只签出文件、只签出空项目，默认的是...
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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How can I swap positions of two open files (in splits) in vim?
... command ctrl+w J. This moves the current window to fill the bottom of the screen, leaving you with:
____________________
| one | two |
| | |
|___________|______|
| three |
| |
|__________________|
Now make either 'one' or 'two' the active window,...
Twitter Bootstrap 3: how to use media queries?
...responsive layout where I want to adjust a few font sizes according to the screen size.
How can I use media queries to make this kind of logic?
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Using vagrant to run virtual machines with desktop environment
...rtualBox guest tools before starting the GUI. This will give you a healthy screen resolution, integrated mouse, etc.
$ sudo apt-get install -y xfce4 virtualbox-guest-dkms virtualbox-guest-utils virtualbox-guest-x11
$ sudo VBoxClient-all
Only now should you start the GUI as the vagrant user, with $ s...
How Do You Clear The IRB Console?
How do you clear the IRB console screen?
21 Answers
21
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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...
Using the scrollwheel in GNU screen
How can I setup GNU screen to allow the mouse's scrollwheel to scroll around in the scrollback buffer? I tried to Google about this, but most hits were on how to allow applications inside screen to use the scrollwheel.
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Text size and different android screen sizes
...scussed already 1000 times, but I can't adjust the text size for different screen sizes. I try to use 'sp' as size units in my custom style:
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