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Sandip Mane
Sandip Mane

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Struct class in Ruby

#ruby #rails #class #struct

Struct is a collection of attributes with accessor methods,
without having to write the class explicitly.

A Struct class generates a new subclass that contains a set of members and their values.
For each member, a reader and writer method is created similar to #attr_accessor.

> Vehicle = Struct.new(:make, :model) > Vehicle.superclass => Struct > Vehicle.ancestors => [Vehicle, Struct, Enumerable, Object, Kernel, BasicObject]
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Since Struct is bundled with Enumerable module,
we can take advantage of methods like #filter, #count, #include?, #uniq, #tally etc.

Example 

> Vehicle = Struct.new(:make, :model) > Vehicle["Dodge", "Hellcat"] => #<struct Vehicle make="Dodge", model="Hellcat"> > bike = Vehicle.new("Triumph", "Daytona") > bike => #<struct Vehicle make="Triumph", model="Daytona"> > bike.make = "Yamaha" > bike["model"] = "R1" > bike => #<struct Vehicle make="Yamaha", model="R1">
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