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gdb fails with “Unable to find Mach task port for process-id” error
...
In Snow Leopard and later Mac OS versions, it isn't enough to codesign the gdb executable.
You have to follow this guide to make it work: http://www.opensource.apple.com/source/lldb/lldb-69/docs/code-signing.txt
The guide explains how to do it for lldb,...
【App Inventor 2 数据可视化】使用柱状图和饼图收集数据 - App应用开发 - ...
...Data2D1改为barGraphData2D对底部的两个饼状图组件都做同样的操作，如图所示：
第3部分：编写数据输入按钮代码7. 编写跟踪总数的按钮的代码编写happyButton代码，记录用户按下它的次数。如何使用下面显示的块(包括变量<font clas...
Singleton: How should it be used
...ee cargo cult programmer in wikipedia)
In user interface widgets
It is supposed to be a cache
In strings
In Sessions
I can go all day long
How to create the best singleton:
The smaller, the better. I am a minimalist
Make sure it is thread safe
Make sure it is never null
Make sure it is created onl...
stop all instances of node.js server
... /f (force) parameter to the command.
Linux machine:
The process is almost identical. You could either kill all Node processes running on the machine (use -$SIGNAL if SIGKILL is insufficient):
killall node
Or also using netstat, you can find the PID of a process listening on a port:
$ netsta...
半年报披露 天涯社区被资本方看空 - 资讯 - 清泛网 - 专注C/C++及内核技术
...天涯社区一度暂停股票的转让。
全国中小企业股份转让系统公告称，截至2015年8月31日，天涯社区等19家新三板挂牌企业因未能按照有关规定披露2015年半年度报告，自2015年9月1日起被暂停股票转让。
这距离天涯社区登陆新三板...
No module named pkg_resources
...
July 2018 Update
Most people should now use pip install setuptools (possibly with sudo).
Some may need to (re)install the python-setuptools package via their package manager (apt-get install, yum install, etc.).
This issue can be highly depe...
How to recursively find the latest modified file in a directory?
...ntf is probably GNU-only, ajreals usage of stat -c is too. Although it is possible to do the same on BSD, the options for formatting is different (-f "%m %N" it would seem)
And I missed the part of plural; if you want more then the latest file, just bump up the tail argument.
...
How to list all installed packages and their versions in Python?
... :
In [1]: import #import press-TAB
Display all 631 possibilities? (y or n)
ANSI audiodev markupbase
AptUrl audioop markupsafe
ArgImagePlugin avahi marshal
BaseHTTPServer axi ...
内存调试技巧：C 语言最大难点揭秘 - C/C++ - 清泛网 - 专注C/C++及内核技术
...他开放源代码工具。其中有许多可以很好地与 AIX 和其他操作系统一起使用。
所有内存工具的功能基本相同：构建可执行文件的特定版本（很像在编译时通过使用 -g 标记生成的调试版本）、练习相关应用程序和研究由工具自动...
rmagick gem install “Can't find Magick-config”
...ll with:
$ sudo apt-get install libmagickwand-dev imagemagick
or on centOs:
$ yum install ImageMagick-devel
On Mac OS, you can use Homebrew:
$ brew install imagemagick
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