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Contents
module Vagrant
module Util
# A hash with indifferent access. Mostly taken from Thor/Rails (thanks).
# Normally I'm not a fan of using an indifferent access hash sine Symbols
# are basically memory leaks in Ruby, but since Vagrant is typically a quick
# one-off binary run and it doesn't use too many hash keys where this is
# used, the effect should be minimal.
#
# hash[:foo] #=> 'bar'
# hash['foo'] #=> 'bar'
#
class HashWithIndifferentAccess < ::Hash
def initialize(hash={}, &block)
super(&block)
hash.each do |key, value|
self[convert_key(key)] = value
end
end
def [](key)
super(convert_key(key))
end
def []=(key, value)
super(convert_key(key), value)
end
def delete(key)
super(convert_key(key))
end
def values_at(*indices)
indices.collect { |key| self[convert_key(key)] }
end
def merge(other)
dup.merge!(other)
end
def merge!(other)
other.each do |key, value|
self[convert_key(key)] = value
end
self
end
def key?(key)
super(convert_key(key))
end
alias_method :include?, :key?
alias_method :has_key?, :key?
alias_method :member?, :key?
protected
def convert_key(key)
key.is_a?(Symbol) ? key.to_s : key
end
end
end
end
Version data entries
18 entries across 18 versions & 2 rubygems