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How to generate random SHA1 hash to use as ID in node.js?
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642
243,583,606,221,817,150,598,111,409x more entropy
I'd recommend using crypto.randomBytes. It'...
How to calculate moving average using NumPy?
...51.25 MiB, increment: 152.50 MiB
bottleneck.move_mean :
peak memory: 374.64 MiB, increment: 75.85 MiB
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How do I merge two dictionaries in a single expression in Python (taking union of dictionaries)?
...4
>>> min(repeat(lambda: dict(chain(x.items(), y.items()))))
2.740647904574871
>>> min(repeat(lambda: dict(item for d in (x, y) for item in d.items())))
4.266070580109954
$ uname -a
Linux nixos 4.19.113 #1-NixOS SMP Wed Mar 25 07:06:15 UTC 2020 x86_64 GNU/Linux
Resources on Dicti...
Should I use Vagrant or Docker for creating an isolated environment? [closed]
...unately, not yet. If you are in a 32 bit system, you will need a VM with a 64 bit guest system in order to run docker. However, with go1.1 the 32 bit support get better and it is possible that docker will support 32 bit arch soon
– creack
May 30 '13 at 6:48
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Expand a random range from 1–5 to 1–7
...ery slightly, but hopefully it shouldn't increase too much even for 32- or 64-bit integers.
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How to write iOS app purely in C
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gsamaras
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answered Apr 24 '12 at 0:37
Richard J. ...
How do multiple clients connect simultaneously to one port, say 80, on a server? [duplicate]
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464
First off, a "port" is just a number. All a "connection to a port" really represents is a pack...
Secure hash and salt for PHP passwords
...mix bcrypt and with the raw output of hash(), either use hex output or base64_encode it. (This applies to any input that may have a rogue \0 in it, which can seriously weaken security.)
Dos
Use scrypt when you can; bcrypt if you cannot.
Use PBKDF2 if you cannot use either bcrypt or scrypt, with ...
Releasing memory in Python
...ain, if you're talking about sending over 2K of arguments and getting back 64K of results, you won't even notice it, but if you're sending and receiving large amounts of data, you'll want to use some other mechanism (a file, mmapped or otherwise; the shared-memory APIs in multiprocessing; etc.).
Sen...
Optimise PostgreSQL for fast testing
...raig Ringer
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