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Bash: infinite sleep (infinite blocking)
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BSD (or at least OS X) doesn't understand sleep infinity either, though it was a cool thing to learn about for Linux. However, while true; do sleep 86400; done ought to be an adequate substitute.
– Ivan X
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How to obtain a Thread id in Python?
...ython docs on Thread.name say "name - A string used for identification purposes only. It has no semantics. Multiple threads may be given the same name. The initial name is set by the constructor."
– drevicko
Dec 4 '12 at 6:10
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rails + MySQL on OSX: Library not loaded: libmysqlclient.18.dylib
... many blogs with install_name_tool, which won't work for me because I'm on OSX Lion:
sudo install_name_tool -change libmysqlclient.18.dylib /usr/local/mysql/lib/libmysqlclient.18.dylib /usr/local/bin/indexer
sudo install_name_tool -change libmysqlclient.18.dylib /usr/local/mysql/lib/libmysqlclient....
How to capture stdout output from a Python function call?
...object.
This tool adds flexibility to existing functions or classes whose
output is hardwired to stdout.
For example, the output of help() normally is sent to sys.stdout. You
can capture that output in a string by redirecting the output to an
io.StringIO object:
f = io.StringIO() ...
multiprocessing: sharing a large read-only object between processes?
...rce out to each concurrently running child.
When parent reaches the end, close the pipe. Child gets end of file and finishes normally.
The child parts are pleasant to write because each child simply reads sys.stdin.
The parent has a little bit of fancy footwork in spawning all the children and...
How do I get the logfile from an Android device?
...e following:
connect the device to the pc.
Check that I already setup my os for that particular device.
Open a terminal
Run adb shell logcat > log.txt
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Difference between core and processor
...on order, and performing the operations through ALUs. For optimization purposes, a core can also hold on-core caches with copies of frequently used memory chunks.
A CPU may have one or more cores to perform tasks at a given time. These tasks are usually software processes and threads that the OS s...
7个App Inventor 2文件操作实用技巧，读写文件从未如此顺手 - App应用开发 ...
...在"判断逻辑，预防空指针异常
官方的文件管理器有一个 是否存在 方法，但很多新手直接调用 读取文件 没判断存在性，App 运行时直接崩溃。正确的做法是三步走：
1. 先用 文件管理器.是否存在(作用域, 路径) 判断
2. 返回...
how to prevent “directory already exists error” in a makefile when using mkdir
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"Generally, stick to the widely-supported (usually posix-specified) options and features of these programs. For example, don't use ‘mkdir -p’, convenient as it may be, because a few systems don't support it at all and with others, it is not safe for parallel execution. " ...
How do I convert a double into a string in C++?
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The boost (tm) way:
std::string str = boost::lexical_cast<std::string>(dbl);
The Standard C++ way:
std::ostringstream strs;
strs << dbl;
std::string str = strs.str();
Note: Don't forget #include <sstream>
...