Thursday, December 25, 2014

[Ruby] string to hex, hex to string

String to Hex

require 'digest'
Digest.hexencode(string)
string.unpack('H*').first
Hex to String

[hex].pack('H*')
Credit: http://stackoverflow.com/a/17223012 



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[PostgreSQL] How to create read-only standby replica (follower)

This link  and this link explain it really well and concise