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Completion block for popViewController

...tion: [CATransaction begin]; [CATransaction setCompletionBlock:^{ // handle completion here }]; [self.navigationController popViewControllerAnimated:YES]; [CATransaction commit]; The completion block will be called as soon as the animation used by popViewControllerAnimated: ends. This funct...
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How to remove all white space from the beginning or end of a string?

How can I remove all white space from the beginning and end of a string? 6 Answers 6 ...
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Combining INSERT INTO and WITH/CTE

...ions go at the top. Wrapping every insert in a CTE has the benefit of visually segregating the query logic from the column mapping. Spot the mistake: WITH _INSERT_ AS ( SELECT [BatchID] = blah ,[APartyNo] = blahblah ,[SourceRowID] = blahblahblah FROM Table1 AS t1 ) INSERT ...
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What does 'require: false' in Gemfile mean?

... This means install the gem, but do not call require when you start Bundler. So you will need to manually call require "whenever" if you want to use the library. If you were to do gem "whenever", require: "whereever" then bundler woul...
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Is there a way to make a DIV unselectable?

...t here: msdn.microsoft.com/en-us/library/hh801966(v=vs.85).aspx But I actually tested on IE, and it works correctly. – KimKha May 1 '13 at 15:27 ...
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Simulating ENTER keypress in bash script

... This only works for things like yum. Where that string is expected. – einarc Apr 8 '19 at 19:09  |  show 1 more com...
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Bash tool to get nth line from a file

...he trick, but I've been wondering if there's a Bash tool that specifically extracts a line (or a range of lines) from a file. ...
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count(*) vs count(column-name) - which is more correct? [duplicate]

... COUNT(*) counts all rows COUNT(column) counts non-NULLs only COUNT(1) is the same as COUNT(*) because 1 is a non-null expressions Your use of COUNT(*) or COUNT(column) should be based on the desired output only. ...
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How do I create a custom iOS view class and instantiate multiple copies of it (in IB)?

...with this class name not found, UIView *view = [[bundle loadNibNamed:NSStringFromClass([self class]) owner:self options:nil] firstObject]; return view; } - (void)commonSetup { UIView *nibView = [self loadViewFromNib]; nibView.frame = self.bounds; // the autoresizingMask will be...
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OS X10.9 环境下部署 QT5.3.1 常见的编译问题 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...件中加入对应的SDK版本: 1 QMAKE_MAC_SDK = macosx10.9 3、:-1: error: [ui_mainwindow.h] Trace/BPT trap: 5 dyld: Library not loaded: /work/build/______________________________PADDING______________________________/lib/QtCore.framework/Versio...