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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...
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Precision String Format Specifier In Swift

...sing string interpolation (which is much more readable) then you could put all the formatting extensions in a file elsewhere and reference it throughout your project. Of course, ideally Apple should provide the formatting library. – Anton Tcholakov Dec 20 '14 a...
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How different is Objective-C from C++? [closed]

... Short list of some of the major differences: C++ allows multiple inheritance, Objective-C doesn't. Unlike C++, Objective-C allows method parameters to be named and the method signature includes only the names and types of the parameters and return type (see bbum's and Chuck...
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Spring @Transactional - isolation, propagation

...tion Defines the data contract between transactions. Read Uncommitted: Allows dirty reads. Read Committed: Does not allow dirty reads. Repeatable Read: If a row is read twice in the same transaction, the result will always be the same. Serializable: Performs all transactions in a sequence. The...
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error LNK2019: 无法解析的外部符号 __imp__PlaySoundW@12,该符号在函数 \...

error LNK2019: 无法解析的外部符号 __imp__PlaySoundW@12,该符号在函数 "long __stdcall WndProc(struct HWND__ *,unsigned int,unsigned int,long)" (?WndProc@@YGJPAUHWND__@@IIJ@Z) 中被引用#include <mmsystem.h>#pragma comment(lib, "WINMM.LIB") #include <mmsystem.h> #pragma comm...
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If I revoke an existing distribution certificate, will it mess up anything with existing apps?

...er weeks of trying to get the guy who has the key to sign the app, they finally came back and said, "Just get it done!". So I am wondering how to proceed. If I go into the provisioning portal, and revoke the dist certificate, and then re-assign one, will I then be able to sign the app and upload it ...
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How can I extract a good quality JPEG image from a video file with ffmpeg?

...ical file sizes and (to my naked eye) appear the same as without qscale at all. – felwithe Jan 28 '15 at 23:03 Can you...
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LINQ order by null column where order is ascending and nulls should be last

...nslated to LINQ method calls. It turns out that var products = from p in _context.Products where p.ProductTypeId == 1 orderby p.LowestPrice.HasValue descending orderby p.LowestPrice descending select p; will be translated by the compile...
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How do I get the full path of the current file's directory?

...3 For the directory of the script being run: import pathlib pathlib.Path(__file__).parent.absolute() For the current working directory: import pathlib pathlib.Path().absolute() Python 2 and 3 For the directory of the script being run: import os os.path.dirname(os.path.abspath(__file__)) I...
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Does a `+` in a URL scheme/host/path represent a space?

...but any + characters in the path component is expected to be treated literally. To be explicit: + is only a special character in the query component. share | improve this answer | ...