Sha256: 108efaa95614b76f1c0f1d92dfda5652e822c50a12d38724ae7b2b9c00a877ee
Contents?: true
Size: 709 Bytes
Versions: 9
Compression:
Stored size: 709 Bytes
Contents
# Intermediate step between a Struct and an OpenStruct. Allows only designated
# field names to be read or written but allows passing fields to constructor
# as keyword arguments.
class KeywordStruct
def self.new(*field_names, &block)
Class.new.tap do |cls|
cls.class_exec do
define_method(:initialize) do |**fields|
fields.each do |field, value|
unless field_names.include?(field)
raise ArgumentError, "Unknown field #{field}"
end
instance_variable_set("@#{field}", value)
end
end
attr_accessor *field_names
end
if block_given?
cls.class_exec(&block)
end
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems