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What are the calling conventions for UNIX & Linux system calls (and user-space functions) on i386 an
...rdx, %rcx,
%r8 and %r9. The kernel interface uses %rdi, %rsi, %rdx, %r10, %r8 and %r9.
A system-call is done via the syscall instruction. This clobbers %rcx and %r11 as well as the %rax return value, but other registers are preserved.
The number of the syscall has to be passed in register ...
Haskell composition (.) vs F#'s pipe forward operator (|>)
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10 Answers
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How to create the most compact mapping n → isprime(n) up to a limit N?
...sent every odd number with one bit e.g. for the given range of numbers (1, 10], starts at 3: 1110
31 Answers
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Lua简明教程 - 脚本技术 - 清泛IT论坛，有思想、有深度
...double型，64bits，你不必担心Lua处理浮点数会慢（除非大于100,000,000,000,000），或是会有精度问题。你可以以如下的方式表示数字，0x开头的16进制和C是很像的。num = 1024
num = 3.0
num = 3.1416
num = 314.16e-2
num = 0.31416E1
num = 0xff
num = 0x56复制...
How do JavaScript closures work?
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+100
A closure is a pairing of:
A function, and
A reference to that function's outer scope (lexical environment)
A lexical environment ...
Named routes _path vs _url
...nd.
– Chris Peters
Aug 13 '12 at 19:10
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Combining C++ and C - how does #ifdef __cplusplus work?
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answered Sep 24 '10 at 17:32
Andrew ShelanskyAndrew Shelansky
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Pass variables to Ruby script via command line
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answered Nov 22 '10 at 10:53
demasdemas
38.7k4848 gold badges156156 silver badges252252 bronze badges
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Parse config files, environment, and command-line arguments, to get a single collection of options
... at this feature. Nice!
– Lemur
May 10 '12 at 20:26
but this doesn't have an answer for environment variables?
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Select between two dates with Django
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answered Oct 18 '10 at 20:46
Daniel RosemanDaniel Roseman
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