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Sorting 1 million 8-decimal-digit numbers with 1 MB of RAM
...orks using the following Python script, assuming a program name of sort1mb.exe.
from subprocess import *
import random
sequence = [random.randint(0, 99999999) for i in xrange(1000000)]
sorter = Popen('sort1mb.exe', stdin=PIPE, stdout=PIPE)
for value in sequence:
sorter.stdin.write('%08d\n' % ...
How do I find numeric columns in Pandas?
...clude and exclude. So isNumeric would look like:
numerics = ['int16', 'int32', 'int64', 'float16', 'float32', 'float64']
newdf = df.select_dtypes(include=numerics)
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...
What is the difference between CMD and ENTRYPOINT in a Dockerfile?
...rios :-)
– ashirley
May 9 '16 at 13:32
93
This is a fabulous answer. I think Docker documentation...
What's the difference between `1L` and `1`?
... Worth mentioning that the integer overflow is due to use of 32-bit signed integers, hence restricted to about +/-2*10^9, even on 64-bit R...
– Gavin Simpson
Aug 10 '11 at 17:47
...
Wait until a process ends
...ch is why I referred to WaitForExit first... in some cases you may want to execute more code when something finishes, but that doesn't mean you need to block the current thread.
– Jon Skeet
Jun 25 '14 at 18:08
...
Simplest two-way encryption using PHP
...ash_equals($a, $b);
}
$nonce = openssl_random_pseudo_bytes(32);
return hash_hmac(self::HASH_ALGO, $a, $nonce) === hash_hmac(self::HASH_ALGO, $b, $nonce);
}
}
Usage Example
$message = 'Ready your ammunition; we attack at dawn.';
$key = hex2bin('000102030405060708090a0b0...
How to detect my browser version and operating system using JavaScript?
...
mplungjan
118k2323 gold badges142142 silver badges201201 bronze badges
answered Jun 27 '12 at 5:00
Himanshu JansariH...
Difference between map, applymap and apply methods in Pandas
...
Straight from Wes McKinney's Python for Data Analysis book, pg. 132 (I highly recommended this book):
Another frequent operation is applying a function on 1D arrays to each column or row. DataFrame’s apply method does exactly this:
In [116]: frame = DataFrame(np.random.randn(4, 3),...
How to validate an e-mail address in swift?
...
Andrej
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answered Mar 4 '16 at 6:12
NazikNazik
8,1...
How to format a string as a telephone number in C#
...n.
– Zack Peterson
Mar 31 '11 at 16:32
Plus One - One small point: that format doesn't look like it has parenthesis ar...