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# DEPRECATED b/c of Hash#rekey and String#variablize (variablize is defined in metaid.rb).
class Hash
# Converts all keys in the Hash to be String values, returning a new Hash.
# With a from_class parameter, limits conversion to only a certain class of keys.
# It defaults to nil which convert any key class.
#
# foo = { :name=>'Gavin', :wife=>:Lisa }
# foo.variablize_keys #=> { "@name"=>"Gavin", "@wife"=>:Lisa }
# foo.inspect #=> { :name =>"Gavin", :wife=>:Lisa }
def variablize_keys( of_class=nil )
self.dup.variablize_keys!( of_class )
end
# Synonym for Hash#keys_to_string, but modifies the receiver in place (and returns it).
# With a from_class parameter, limits conversion to only a certain class of keys.
# It defaults to nil which convert any key class.
#
# foo = { :name=>'Gavin', :wife=>:Lisa }
# foo.variablize_keys! #=> { "@name"=>"Gavin", "@wife"=>:Lisa }
# foo.inspect #=> { "@name"=>"Gavin", "@wife"=>:Lisa }
def variablize_keys!(of_class=nil)
raise ArgumentError, "Parameter must be a class" unless of_class.kind_of?(Class) if of_class
if of_class
self.each_key do |k|
if k.respond_to?(:to_s) and k.class == of_class
k = k.to_s
nk = k[0,1] != '@' ? k : "@#{k}"
self[nk]=self.delete(k)
end
end
else
self.each_key do |k|
if k.respond_to?(:to_s)
k = k.to_s
nk = k[0,1] != '@' ? k : "@#{k}"
self[nk]=self.delete(k)
end
end
end
self
end
end
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