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RecursiveStruct

A gem to create recursive open structs.

Installation

Add this line to your application's Gemfile:

gem 'recursive_struct'

And then execute:

$ bundle

Or install it yourself as:

$ gem install recursive_struct

Usage

Passing a hash into the initializer will create an open struct that has all nested getter and setter methods.

hash = { a: { b: true }, c: [{ d: true }], e: false }
struct = RecursiveStruct.new(hash}
struct.a         # #<RecursiveStruct @data={:b=>true}>
struct.a.b       # true
struct.c         # [#<RecursiveStruct @data={:d=>true}>]
struct.c.first.d # true
struct.e         # false
struct.f         # nil

You can also use a setter for a method that doesn't exist. A getter and setter will be generated dynamically.

struct = RecursiveStruct.new
struct.a = true
struct[:b] = true
struct.a   # true
struct[:b] # true

If this value happens to be a hash, it will be wrapped in a RecursiveStruct.

struct = RecursiveStruct.new
struct.a = { b: true }
struct a # #<RecursiveStruct @data={:b=>true}>

If this value happens to be an array, each hash in the array will be wrapped in a RecursiveStruct.

struct = RecursiveStruct.new
struct.a = [{ b: true }]
struct.a         # [#<RecursiveStruct @data={:b=>true}>]
struct.a.first.b # true
struct.a.size    # 1

Contributing

  1. Fork it ( https://github.com/pboksz/recursive_struct/fork )
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create a new Pull Request

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A gem to create recursive open structs

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