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Xcode is not currently available from the Software Update server

I have problems with my macport after update to OS X 10.9. 13 Answers 13 ...
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C++类的前置申明 - c++1y / stl - 清泛IT社区,为创新赋能!

class A; (而非 include "A.h",可能暂时都没有类A的定义) 使用前置申明后,只能使用A的指针(32位编译器占4字节,64位编译器占8字节),new一个A对象会报错,因为未定义不知如何分配空间。
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How to increase heap size of an android application?

... work on Gingerbread and above. The only way to have as large a limit as possible is to do memory intensive tasks via the NDK, as the NDK does not impose memory limits like the SDK. Alternatively, you could only load the part of the model that is currently in view, and load the rest as you need it...
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How to set date format in HTML date input tag?

I am wondering whether it is possible to set the date format in the html <input type="date"></input> tag... Currently it is yyyy-mm-dd, while I need it in the dd-mm-yyyy format. ...
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Disable Auto Zoom in Input “Text” tag - Safari on iPhone

...scale=1, maximum-scale=1, user-scalable=0"/> – Milos Matic Dec 4 '15 at 9:57 40 ...
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How to split a file into equal parts, without breaking individual lines? [duplicate]

I was wondering if it was possible to split a file into equal parts ( edit: = all equal except for the last), without breaking the line? Using the split command in Unix, lines may be broken in half. Is there a way to, say, split up a file in 5 equal parts, but have it still only consist of whole li...
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How to upgrade Git to latest version on macOS?

I just bought a new Mac with OS X Lion and I checked in the Terminal what version of git is installed by default. I got the answer ...
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Why is unsigned integer overflow defined behavior but signed integer overflow isn't?

... The historical reason is that most C implementations (compilers) just used whatever overflow behaviour was easiest to implement with the integer representation it used. C implementations usually used the same representation used by the CPU - so the overflo...
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Match whitespace but not newlines

...de does not consider it whitespace. For that reason, Perl \h differs from POSIX blank ([[:blank:]] in Perl, \p{Blank} in Java) and Java 8 \h. Admittedly, it's an edge case. – Aleksandr Dubinsky Feb 3 '16 at 18:07 ...
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How can I remove the first line of a text file using bash/sed script?

...han sed. tail is also available on BSD and the -n +2 flag is consistent across both tools. Check the FreeBSD or OS X man pages for more. The BSD version can be much slower than sed, though. I wonder how they managed that; tail should just read a file line by line while sed does pretty complex oper...