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How to remove an element from a list by index
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What is the pythonic way to detect the last element in a 'for' loop?
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Most of the times it is easier (and cheaper) to make the first iteration the special case inst...
Listing all permutations of a string/integer
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First of all: it smells like recursion of course!
Since you also wanted to know the principle,...
How to atomically delete keys matching a pattern using Redis
...g like this
EVAL "return redis.call('del', unpack(redis.call('keys', ARGV[1])))" 0 prefix:[YOUR_PREFIX e.g delete_me_*]
Warning: As the Redis document says, because of performance maters, keys
command should not use for regular operations in production, this
command is intended for debuggi...
Select multiple columns in data.table by their numeric indices
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For versions of data.table >= 1.9.8, the following all just work:
library(data.table)
dt &...
Mapping two integers to one, in a unique and deterministic way
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How can I find the length of a number?
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海量数据相似度计算之simhash和海明距离 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...就拿最简单的两个数据使用Apache提供的 Levenshtein for 循环100w次计算这两个数据的相似度。代码结果如下：
String s1 = "你妈妈喊你回家吃饭哦，回家罗回家罗" ;
String s2 = "你妈妈叫你回家吃饭啦，回家罗回家罗" ;
long t1 = System.c...