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Contents
# encoding: utf-8
module Nanoc::HashExtensions
# Returns a new hash where all keys are recursively converted to symbols by
# calling {Nanoc::ArrayExtensions#symbolize_keys} or
# {Nanoc::HashExtensions#symbolize_keys}.
#
# @return [Hash] The converted hash
def symbolize_keys
inject({}) do |hash, (key, value)|
hash.merge(key.to_sym => value.respond_to?(:symbolize_keys) ? value.symbolize_keys : value)
end
end
# Returns a new hash where all keys are recursively converted to strings by
# calling {Nanoc::ArrayExtensions#stringify_keys} or
# {Nanoc::HashExtensions#stringify_keys}.
#
# @return [Hash] The converted hash
def stringify_keys
inject({}) do |hash, (key, value)|
hash.merge(key.to_s => value.respond_to?(:stringify_keys) ? value.stringify_keys : value)
end
end
# Freezes the contents of the hash, as well as all hash values. The hash
# values will be frozen using {#freeze_recursively} if they respond to
# that message, or #freeze if they do not.
#
# @see Array#freeze_recursively
#
# @return [void]
#
# @since 3.2.0
def freeze_recursively
return if self.frozen?
freeze
each_pair do |key, value|
if value.respond_to?(:freeze_recursively)
value.freeze_recursively
else
value.freeze
end
end
end
# Calculates the checksum for this hash. Any change to this hash will result
# in a different checksum.
#
# @return [String] The checksum for this hash
#
# @api private
def checksum
array = self.to_a.sort_by { |kv| kv[0].to_s }
array.checksum
end
end
class Hash
include Nanoc::HashExtensions
end
Version data entries
12 entries across 12 versions & 1 rubygems