Sumhash

Provides summation operation for Hash and OpenStruct

Works with nested structures

Install

Add sumhash to your Gemfile:

gem "sumhash"

Hashes with same keys

{ one: 1.0, two: 2.3 } + { one: 2.0, two: 2.0 }

Result:

{ one: 3.0, two: 4.3 }

With different keys

{ one: 1.1, two: 2.3, three: 3.4 } + { two: 3.2, four: 4.5 } + { one: 1.0, two: 2.0 }

Result:

{ one: 2.1, two: 7.5, three: 3.4, four: 4.5 }

Hashes with nested OpenStruct

hashes = [
  { one: 1, two: 2, resume: OpenStruct.new(result: 10) },
  { two: 2, resume: OpenStruct.new(result: 20) }
]

hashes.reduce(:+)

Result:

{ one: 1, two: 4, resume: OpenStruct.new(result: 30) }