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Best algorithm for detecting cycles in a directed graph [closed]
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edited Jul 28 '15 at 22:06
nbro
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Stripping everything but alphanumeric chars from a string in Python
...h for ch in string.printable if ch.isalnum())"
10000 loops, best of 3: 57.6 usec per loop
$ python -m timeit -s \
"import string" \
"filter(str.isalnum, string.printable)"
10000 loops, best of 3: 37.9 usec per loop
$ python -m timeit -s \
"import re, string" \
"re...
Django in / not in query
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166
table1.objects.exclude(id__in=
table2.objects.filter(your_condition).values_list('id', flat...
How do I do an OR filter in a Django query?
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6 Answers
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How can I extract the folder path from file path in Python?
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6 Answers
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How do I import other TypeScript files?
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206
From TypeScript version 1.8 you can use simple import statements just like in ES6:
import { Zip...
rgdal package installation
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tflutre
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answered Mar 6 '13 at 13:42
jubajuba
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how to detect search engine bots with php?
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16 Answers
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Most efficient way to remove special characters from string
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private static bool[] _lookup;
static Program() {
_lookup = new bool[65536];
for (char c = '0'; c <= '9'; c++) _lookup[c] = true;
for (char c = 'A'; c <= 'Z'; c++) _lookup[c] = true;
for (char c = 'a'; c <= 'z'; c++) _lookup[c] = true;
_lookup['.'] = true;
_lookup['_'] ...