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O2O江湖:2015大洗牌 2016 BAT等巨头将“肉搏” - 资讯 - 清泛网 - 专注C/C++及内核技术
...很难继续再融进一轮，而百度阿里如果足够有决心，则会把消耗战尽量拉长，新美大会先撑不住。
目前美团占优的餐饮团购、外卖、电影、酒店等都已然是红海，四面迎敌，具备战略意义但很难盈利，若以长远计，点评占优的...
Unignore subdirectories of ignored directories in Git
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I have a global gitignore file where I ignored all *.zip file. Yet for a particular project, I want to include zip files. I added this line to that project's .gitignore and it works great!: !*.zip
– Jinghao Shi
Mar 21 '15 at 3:44
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windbg 备忘 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...令：
k,kM
.frame frame_number
Windbg查看全局变量:
a.直接把鼠标移动到全局变量上,就能显示值了.
b.watch窗口里面,把那个全局变量输进去.
入侵模式调试
在默认情况下，当我们用CDB调试一个已经运行的进程时，它通常作为全功能...
Unix shell script to truncate a large file
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trunc filename
works on AIX flavor of UNIX
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Convert base-2 binary number string to int
... 2 * 1)
add = lambda x,y : x + y
reduce(add, [int(x) * 2 ** y for x, y in zip(list(binstr), range(len(binstr) - 1, -1, -1))])
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初窥InnoDB的Memcached插件 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...后别忘了重启Memcached插件。
说明：因为们在配置的时候把表命名为default，所以在请求的时候不用传递表名。如果不存在default，那么会把名字按照字母顺序正序排列，排在第一位的就是缺省。
…
本文在使用Memcached插件的时候...
Run a string as a command within a Bash script
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For me echo XYZ_20200824.zip | grep -Eo '[[:digit:]]{4}[[:digit:]]{2}[[:digit:]]{2}'
was working fine but unable to store output of command into variable.
I had same issue I tried eval but didn't got output.
Here is answer for my problem:
cmd=$(echo ...
How to build Qt for Visual Studio 2010
...s 4.8.6 for Windows (Visual Studio 2008, 218 MB)", but by clicking on the "zip" link above it.
On that link, you get a big zip file like "qt-everywhere-opensource-src-4.8.6.zip". Unzip this into a folder and make its path something nice and small, for example "E:\Qt"
Visual Studio Command Prompt...
Postgresql GROUP_CONCAT equivalent?
...he array type:
select
array_to_string(
array(select distinct unnest(zip_codes) from table),
', '
);
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In Unix, can I run 'make' in a directory without cd'ing to that directory first?
... you want, but the -C option won't work on Solaris 10 (/usr/ccs/bin/make), AIX (/usr/bin/make), or HP-UX 11.23 (/usr/bin/make). Still, 1 out of 4 isn't too bad.
– Jonathan Leffler
Jan 24 '09 at 4:17
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