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eval command in Bash and its typical uses
...strin
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answered Jun 16 '12 at 16:32
Gilles 'SO- stop being evil'Gilles 'SO- stop being evil'
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What is in your Mathematica tool bag? [closed]
...e where each line is a different element in the matrix, as follows
rx ry rz i j Re[Hij] Im[Hij]
To turn that list into a set of matrices, I gathered up all sublists that contain the same coordinate, turned the element information into a rule (i.e. {i,j}-> Re[Hij]+I Im[Hij]), and then turned th...
What does the git index contain EXACTLY?
...ve undo extensions.
4-byte extension signature. If the first byte is 'A'..'Z' the extension is optional and can be ignored.
32-bit size of the extension
Extension data
160-bit SHA-1 over the content of the index file before this checksum.
mljrg comments:
If the index is the place where the next ...
Dependency Inject (DI) “friendly” library
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Why do pthreads’ condition variable functions require a mutex?
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Is C++ context-free or context-sensitive?
...emplate instantiation is Turing-complete. See, for example, Todd L. Veldhuizen's 2003 paper.
Regardless, C++ can be parsed by a computer, so it could certainly be parsed by a Turing machine. Consequently, an unrestricted grammar could recognize it. Actually writing such a grammar would be impractic...
What are the mathematical/computational principles behind this game?
...oes exists a geometry of order n.
What does that have to do with the puzzle, one may ask.
Put card instead of point and picture instead of line and the axioms become:
Every two cards have exactly one picture in common.
For every two pictures there is exactly one card that has both of them.
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How to install GCC piece by piece with GMP, MPFR, MPC, ELF, without shared libraries?
...tic Library.
wget ftp://gcc.gnu.org/pub/gcc/infrastructure/gmp-4.3.2.tar.bz2
bunzip2 gmp-4.3.2.tar.bz2
tar xvf gmp-4.3.2.tar
cd gmp-4.3.2
./configure --disable-shared --enable-static --prefix=/tmp/gcc
make && make check && make install
MPFR
MPFR is the GNU Multiple-precision floa...
MQTT物联网协议完全实践指南 · App Inventor 2 中文网
...--> C
C --> D[订阅者X]
C --> E[订阅者Y]
C --> F[订阅者Z]
核心组件说明：
发布者（Publisher）：消息发送方，向特定主题发布消息
订阅者（Subscriber）：消息接收方，订阅感兴趣的主题
代理服务器（Broker）：消息路由中...
Undefined behavior and sequence points
...it. If you already know these things, reading them again won't make you crazy.
Pre-requisites : An elementary knowledge of C++ Standard
What are Sequence Points?
The Standard says
At certain specified points in the execution sequence called sequence points, all side effects of previous ...