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select、poll、epoll之间的区别总结[整理] - C/C++ - 清泛网 - 专注C/C++及内核技术
...lect、poll、epoll之间的区别总结[整理]select，poll，epoll都是IO多路复用的机制。I O多路复用就通过一种机制，可以监视多个描述符，一旦某个描述符就绪（一般是读就绪或者写就绪...select，poll，epoll都是IO多路复用的机制。I/O多路...
UITableView didSelectRowAtIndexPath: not being called on first tap
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Also check the selection property of your table view in xib file. Use 'Single Selection' or 'Multiple Selection' as required.
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preferredStatusBarStyle isn't called
...verride -preferredStatusBarStyle , but it isn't called.
Are there any options that I can change to enable it? (I'm using XIBs in my project.)
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Understanding the Event Loop
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1: If we are talking about a single-threaded application, then what processes setTimeouts while JS engine accepts more requests and executes them? Isn't that single thread will continue working on other requests? Then who is going to keep working on setTimeout while other reque...
Generate .pem file used to set up Apple Push Notifications
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To enable Push Notification for your iOS app, you will need to create and upload the Apple Push Notification Certificate (.pem file) to us so we will be able to connect to Apple Push Server on your behalf.
(Updated version with updated screen shots...
Detect iPad users using jQuery?
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iPad Detection
You should be able to detect an iPad user by taking a look at the userAgent property:
var is_iPad = navigator.userAgent.match(/iPad/i) != null;
iPhone/iPod Detection
Similarly, the platform property to check for devi...
iPhone 5 CSS media query
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Another useful media feature is device-aspect-ratio.
Note that the iPhone 5 does not have a 16:9 aspect ratio. It is in fact 40:71.
iPhone < 5:
@media screen and (device-aspect-ratio: 2/3) {}
iPhone 5:
@media screen and (device-aspect-ratio: 40/71) {}
iPhone 6:
@medi...
Make a phone call programmatically
...@"tel://" stringByAppendingString:mymobileNO.titleLabel.text];
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:phoneNumber]];
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Install .ipa to iPad with or without iTunes
I have the .ipa from PhoneGap build and I need to test it. I got provisioning profile from Developer account.
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Viewing complete strings while debugging in Eclipse
While debugging Java code, Strings in the views "Variables" and "Expressions" show up only till a certain length, after which Eclipse shows "..."
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