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马云、王健林为什么都看中了上海？ - 资讯 - 清泛网 - 专注C/C++及内核技术
...：1990年4月，中共中央、国务院宣布开发开放浦东；1992年3月，《政府工作报告》提出上海要“逐步发展成为远东地区经济、金融、贸易中心之一”；10月，中共十四大报告提出“尽快把上海建成国际经济、金融、贸易中心之一。...
Performance of Java matrix math libraries? [closed]
...s. I've compared some of these libraries. I attempted to matrix multiply a 3000 by 3000 matrix of doubles with itself. The results are as follows.
Using multithreaded ATLAS with C/C++, Octave, Python and R, the time taken was around 4 seconds.
Using Jama with Java, the time taken was 50 seconds.
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Comma in C/C++ macro
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edited Sep 23 '16 at 14:57
answered Dec 12 '12 at 15:16
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C++特化模板函数的符号多重定义错误问题 - C/C++ - 清泛网 - 专注C/C++及内核技术
...数名可以在多个函数模板声明或定义之间被重复使用.
3.模板参数在函数参数表中可以出现的次数没有限制
4.一个模板的定义和多个声明所使用的模板参数名无需相同
5.如果一个函数模板有一个以上的模板类型参数,则每...
Getting the path of the home directory in C#?
...turns the My Documents folder. The safest way to get the home folder on Win32 is to read %HOMEDRIVE%%HOMEPATH%. Reading environment variables is actually very portable to do (across Unix and Windows), so I'm not sure why the poster wanted to not do it.
Edited to add: For crossplatform (Windows/Unix...
Convert Unix timestamp to a date string
...ith GNU's date you can do:
date -d "@$TIMESTAMP"
# date -d @0
Wed Dec 31 19:00:00 EST 1969
(From: BASH: Convert Unix Timestamp to a Date)
On OS X, use date -r.
date -r "$TIMESTAMP"
Alternatively, use strftime(). It's not available directly from the shell, but you can access it via gawk. T...
How to cut an entire line in vim and paste it?
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Dillon Davis
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answered Mar 27 '13 at 7:35
Programmer123123P...
Task continuation on UI thread
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353
Call the continuation with TaskScheduler.FromCurrentSynchronizationContext():
Task UITask...
git pull while not in a git directory
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Starting git 1.8.5 (Q4 2013), you will be able to "use a Git command, but without having to change directories".
Just like "make -C <directory>", "git -C <directory> ..." tells Git to go there before doing anything else.
See commit 4...
Structure padding and packing
...boundaries - say, int members would have offsets, which are mod(4) == 0 on 32-bit platform. Padding is on by default. It inserts the following "gaps" into your first structure:
struct mystruct_A {
char a;
char gap_0[3]; /* inserted by compiler: for alignment of b */
int b;
char c;
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