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Contents
# Hash#deep_merge
# From: http://pastie.textmate.org/pastes/30372, Elliott Hird
# Source: http://gemjack.com/gems/tartan-0.1.1/classes/Hash.html
# This file contains extensions to Ruby and other useful snippits of code.
# Time to extend Hash with some recursive merging magic.
class Hash
# Merges self with another hash, recursively.
#
# This code was lovingly stolen from some random gem:
# http://gemjack.com/gems/tartan-0.1.1/classes/Hash.html
#
# Thanks to whoever made it.
def deep_merge(hash)
target = dup
hash.keys.each do |key|
if hash[key].is_a? Hash and self[key].is_a? Hash
target[key] = target[key].deep_merge(hash[key])
next
end
target[key] = hash[key]
end
target
end
# From: http://www.gemtacular.com/gemdocs/cerberus-0.2.2/doc/classes/Hash.html
# File lib/cerberus/utils.rb, line 42
def deep_merge!(second)
second.each_pair do |k,v|
if self[k].is_a?(Hash) and second[k].is_a?(Hash)
self[k].deep_merge!(second[k])
else
self[k] = second[k]
end
end
end
#-----------------
# cf. http://subtech.g.hatena.ne.jp/cho45/20061122
def deep_merge2(other)
deep_proc = Proc.new { |k, s, o|
if s.kind_of?(Hash) && o.kind_of?(Hash)
next s.merge(o, &deep_proc)
end
next o
}
merge(other, &deep_proc)
end
def deep_merge3(second)
# From: http://www.ruby-forum.com/topic/142809
# Author: Stefan Rusterholz
merger = proc { |key,v1,v2| Hash === v1 && Hash === v2 ? v1.merge(v2, &merger) : v2 }
self.merge(second, &merger)
end
def keep_merge(hash)
target = dup
hash.keys.each do |key|
if hash[key].is_a? Hash and self[key].is_a? Hash
target[key] = target[key].keep_merge(hash[key])
next
end
#target[key] = hash[key]
target.update(hash) { |key, *values| values.flatten.uniq }
end
target
end
end
Version data entries
52 entries across 52 versions & 1 rubygems