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Center a position:fixed element
...l not center vertically and won't work in IE6/7. */
left: 0;
right: 0;
Again, this works only in IE8+ if you care about IE, and this centers only horizontally not vertically.
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How do I force a UITextView to scroll to the top every time I change the text?
...ontentOffset:CGPointZero animated:YES];
This does it for me.
Swift version (Swift 4.1 with iOS 11 on Xcode 9.3):
note.setContentOffset(.zero, animated: true)
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iOS5 Storyboard error: Storyboards are unavailable on iOS 4.3 and prior
...at. Just before final testing I decided to try it out to see if it runs on iOS 4.3. I clicked on the gray 5.0 in the project settings and selected 4.3.
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position: fixed doesn't work on iPad and iPhone
I have been struggling with fixed positioning in iPad for a while. I know iScroll and it does not always seem to work (even in their demo). I also know that Sencha has a fix for that, but I couldn't Ctrl + F the source code for that fix.
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What are best practices for validating email addresses on iOS 2.0
...hat is the cleanest way to validate an email address that a user enters on iOS 2.0?
13 Answers
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OceanBase使用libeasy原理源码分析：客户端 - 数据库(内核) - 清泛网 - 专...
...》，作为客户端使用时，会涉及到一些数据结构，easy_session_t, easy_client_t, easy_hash_t, easy_hash_list_t等。
easy_session_t用来封装一个要发出去的请求，easy_client_t用来封装一个TCP连接的发起端，easy_hash_t是一个哈希表，easy_hash_list_t是采...
Get push notification while App in foreground iOS
I am using push notification service in my app. When app is in background I am able to see notification on notification screen(screen shown when we swipe down from top of iOS device). But if application is in foreground the delegate method
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Location Services not working in iOS 8
My app that worked fine on iOS 7 doesn't work with the iOS 8 SDK.
26 Answers
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Can you autoplay HTML5 videos on the iPad?
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iOS 10 update
The ban on autoplay has been lifted as of iOS 10 - but with some restrictions (e.g. A can be autoplayed if there is no audio track).
To see a full list of these restrictions, see the official docs: https://we...
How to toggle a value in Python
...0
>>> x ^= 1
>>> x
1
The technique generalizes to any pair of integers. The xor-by-one step is replaced with a xor-by-precomputed-constant:
>>> A = 205
>>> B = -117
>>> t = A ^ B # precomputed toggle constant
>>> x = A
>>> x ^...