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Allowed characters in Linux environment variable names
...='. For values to be
portable across systems conforming to
IEEE Std 1003.1-2001, the value shall
be composed of characters from the
portable character set (except NUL
and as indicated below).
So names may contain any character except = and NUL, but:
Environment variable names used by...
Magic number in boost::hash_combine
...
The magic number is supposed to be 32 random bits, where each is equally likely to be 0 or 1, and with no simple correlation between the bits. A common way to find a string of such bits is to use the binary expansion of an irrational number; in this case, that...
How do I send a file as an email attachment using Linux command line?
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rynoprynop
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...
Find out how much memory is being used by an object in Python [duplicate]
... |
edited Mar 28 '18 at 6:36
Rob♦
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answered A...
How to write asynchronous functions for Node.js
...as
async_function(42, function(val) {
console.log(val)
});
console.log(43);
Will print 42 to the console asynchronously. In particular process.nextTick fires after the current eventloop callstack is empty. That call stack is empty after async_function and console.log(43) have run. So we print 4...
'printf' vs. 'cout' in C++
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360
I'm surprised that everyone in this question claims that std::cout is way better than printf, ...
How do I determine the size of an object in Python?
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13 Answers
13
Active
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Why {} + {} is NaN only on the client side? Why not in Node.js?
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132
Updated note: this has been fixed in Chrome 49.
Very interesting question! Let's dig in.
The ...
Multiple INSERT statements vs. single INSERT with multiple VALUES
...------------+
| 245 | 528 | 41 | 2400 | 0.167346939 |
| 246 | 528 | 40 | 2416 | 0.162601626 |
| 247 | 528 | 38 | 2416 | 0.153846154 |
| 248 | 528 | 39 | 2432 | 0.157258065 ...