Class | OpenStruct |
In: |
lib/more/facets/ostruct.rb
|
Parent: | Object |
Allows the initialization of an OpenStruct with a setter block:
person = OpenStruct.new do |o| o.name = 'John Smith' o.gender = :M o.age = 71 end
You can still provide a hash for initialization purposes, and even combine the two approaches if you wish.
person = OpenStruct.new(:name => 'John Smith', :age => 31) do |p| p.gender = :M end
Alternatively you can provide a default block:
stuff = OpenStruct.new{ |o,k| o[k] = [] } stuff.place << :a stuff.place << :b stuff.place #=> [:a, :b]
A setter block versus a defualt block is determined by the arity of the block. You can not provide both at the same time.
CREDIT: Noah Gibbs, Gavin Sinclair
Access a value in the OpenStruct by key, like a Hash. This increases OpenStruct‘s "duckiness".
o = OpenStruct.new o.t = 4 o['t'] #=> 4
Set a value in the OpenStruct by key, like a Hash.
o = OpenStruct.new o['t'] = 4 o.t #=> 4
Merge hash data creating a new OpenStruct object.
o = OpenStruct.new o.ostruct_merge { :a => 2 } o.a #=> 2
Provides access to an OpenStruct‘s inner table.
o = OpenStruct.new o.a = 1 o.b = 2 o.instance_delegate.each { |k, v| puts "#{k} #{v}" }
produces
a 1 b 2
Merge hash data creating a new OpenStruct object.
o = OpenStruct.new o.ostruct_merge { :a => 2 } o.a #=> 2