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require "hamster/hash"
require "hamster/read_copy_update"
module Hamster
# @api private
class MutableHash
include ReadCopyUpdate
def self.[](pairs = {})
MutableHash.new(Hash[pairs])
end
def put(key, value = Undefined, &block)
transform { |hash| hash.put(key, value, &block) }
end
def store(key, value)
put(key, value)
value
end
alias :[]= :store
def delete(key)
old_value = nil
transform do |hash|
old_value = hash.get(key)
hash.delete(key)
end
old_value
end
end
end
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