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How do you debug PHP scripts? [closed]
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How to determine if a record is just created or updated in after_save
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edited Nov 10 '17 at 19:39
answered Aug 25 '11 at 0:41
Zu...
Vim: insert the same characters across multiple lines
...to the n in name.
Enter visual block mode (Ctrlv).
Press j three times (or 3j).
Press I (capital i).
Type in vendor_. Note: It will only update the screen in the first line - until Esc is pressed (6.), at which point all lines will be updated.
Press Esc.
An uppercase I must be used rather than a...
How to split one string into multiple variables in bash shell? [duplicate]
...iodically...
– Rob I
Feb 10 '16 at 13:57
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SQL Server - When to use Clustered vs non-Clustered Index?
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edited Dec 6 '13 at 0:43
Zain Rizvi
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What is the claims in ASP .NET Identity
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海量数据相似度计算之simhash短文本查找 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...imhash，计算量还是蛮大，普通PC 比较1000w次海明距离需要 300ms ，和5000w数据比较需要1.8 s。看起来相似度计算不是很慢，还在秒级别。给大家算一笔账就知道了：
随着业务增长需要一个小时处理100w次，一个小时为3600 *1000 = 360w毫...
How do I create a SHA1 hash in ruby?
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require 'digest/sha1'
Digest::SHA1.hexdigest 'foo'
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Remove file from SVN repository without deleting local copy
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phihagphihag
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Convert varchar to uniqueidentifier in SQL Server
...RING(@uuid, 1, 8) + '-' + SUBSTRING(@uuid, 9, 4) + '-' + SUBSTRING(@uuid, 13, 4) + '-' +
SUBSTRING(@uuid, 17, 4) + '-' + SUBSTRING(@uuid, 21, 12)
AS UNIQUEIDENTIFIER)
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