大约有 40,000 项符合查询结果(耗时:0.0737秒) [XML]

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What's onCreate(Bundle savedInstanceState)

...time and it will get in use when activity orientation get changed ....... http://www.gitshah.com/2011/03/how-to-handle-screen-orientation_28.html Android provides another elegant way of achieving this. To achieve this, we have to override a method called onSaveInstanceState(). Android platform a...
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C# pattern to prevent an event handler hooked twice [duplicate]

...ution and the best one (considering performance) is: private EventHandler _foo; public event EventHandler Foo { add { _foo -= value; _foo += value; } remove { _foo -= value; } } No Linq using required. No need to check for null before cancelling a subscrip...
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What are 'closures' in .NET?

...thod and the variable j [CompilerGenerated] private sealed class <>c__DisplayClass2 { public <>c__DisplayClass2(); public void <fillFunc>b__0() { Console.Write("{0} ", this.j); } public int j; } for the function: static void fillFunc(int count) { ...
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iOS UIImagePickerController result image orientation after upload

...uite similar to this one) that includes a lengthy discussion of what's actually going on. – Gallymon Nov 29 '13 at 4:30  |  show 21 more comme...
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第一个Hello,OS World操作系统 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

第一个Hello,OS World操作系统hello_os_word_my_first_os操作系统并非我们想象中的深不可测、遥不可及,只要你对它感兴趣并随我一起动手实践,你也能开发出属于自己的os。本文通过一个最简单的os,完成Hello, OS World文字的输出来演示os...
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What is a stored procedure?

... a couple of ways. Most major DBMs support stored procedures; however, not all do. You will need to verify with your particular DBMS help documentation for specifics. As I am most familiar with SQL Server I will use that as my samples. To create a stored procedure the syntax is fairly simple: CRE...
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ORA-30926: unable to get a stable set of rows in the source tables

... This is usually caused by duplicates in the query specified in USING clause. This probably means that TABLE_A is a parent table and the same ROWID is returned several times. You could quickly solve the problem by using a DISTINCT in yo...
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How does Chrome's “Request Desktop Site” option work?

... case it just reloads somesite.com/m. I would expect that this works with HTTP 301 and 302 redirects, I know it works with document.location changes (at least as described), and would speculate that it works with <meta> refreshes. ...
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UILabel text margin [duplicate]

...ilIndent = -10.0f; NSAttributedString *attrText = [[NSAttributedString alloc] initWithString:title attributes:@{ NSParagraphStyleAttributeName : style}]; UILabel * label = [[UILabel alloc] initWithFrame:someFrame]; label.numberOfLines = 0; label.attributedText = attrText; Here is the above e...
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Is it true that one should not use NSLog() on production code?

... line number to make it easier to track down log statements. #define DEBUG_MODE #ifdef DEBUG_MODE #define DebugLog( s, ... ) NSLog( @"<%p %@:(%d)> %@", self, [[NSString stringWithUTF8String:__FILE__] lastPathComponent], __LINE__, [NSString stringWithFormat:(s), ##__VA_ARGS__] ) #else ...