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What part of Hindley-Milner do you not understand?
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: and ∈ are very similar, in that they mean that one thing is contained in another thing – a set contains elements, and a type contains values, in a sense. The crucial difference is that x ∈ S means that a set S literally contains an element x, whereas Γ ⊢ x : T mean...
Random hash in Python
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A md5-hash is just a 128-bit value, so if you want a random one:
import random
hash = random.getrandbits(128)
print("hash value: %032x" % hash)
I don't really see the point, though. Maybe you should elaborate why you need this...
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Find and replace strings in vim on multiple lines
...ines (vertically, so to speak), while the 'g' flag determines whether only one or all matches within the line (so horizontally) are replaced.
– Ingo Karkat
Feb 15 at 20:58
add...
Bash script processing limited number of commands in parallel
...links[@]}"; do wget "$link" & (( i++%waitevery==0 )) && wait; done >/dev/null 2>&1
– kojiro
Oct 23 '13 at 13:48
19
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Difference between and
...hough (surprise surprise) there are a few issues with them when using Everyone's Favourite Browser (IE). Worth knowing about though.
– user7094
Nov 14 '08 at 15:27
4
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Disable password authentication for SSH [closed]
...do this, without having to turn password authentication on, every time someone want's to add a key...
– Matthew
Nov 11 '19 at 0:14
1
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Why does Java's Arrays.sort method use two different sorting algorithms for different types?
...stable merge sort for primitive types might be that it requires making a clone of the array. For reference types, where the referred objects usually take up far more memory than the array of references, this generally does not matter. But for primitive types, cloning the array outright doubles the m...
Check for current Node Version
...ersions object which provides a lot of versions for the different node components.
Example:
{
http_parser: '2.5.2',
node: '4.4.3',
v8: '4.5.103.35',
uv: '1.8.0',
zlib: '1.2.8',
ares: '1.10.1-DEV',
icu: '56.1',
modules: '46',
openssl: '1.0.2g'
}
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Declaration/definition of variables locations in ObjectiveC?
... and objective C I've been really puzzled by the different locations where one could be declaring and defining variables. On one hand we have the traditional C approach, on the other we have the new ObjectiveC directives that add OO on top of that. Could you folks helps me understand the best practi...
How to use Oracle ORDER BY and ROWNUM correctly?
... ROWNUM could be faster than ROW_NUMBER() so whether or not one should use one over the other depends on a number of factors.
– David Faber
Feb 6 '15 at 22:26
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