Web Reference: Ruby struct. Learn how to create Ruby structs, why are they useful & important mistakes to avoid. You'll also learn how to set & get struct values, OpenStruct, etc. An OpenStruct is a data structure, similar to a Hash, that allows the definition of arbitrary attributes with their accompanying values. This is accomplished by using Ruby's metaprogramming to define methods on the class itself. Methods OpenStruct#as_json and OpenStruct.json_create may be used to serialize and deserialize a OpenStruct object; see Marshal. Method OpenStruct#as_json serializes self, returning a 2-element hash representing self:
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