What is best way to create an array of hashes from an array?

Question

Given this array:

array = ['one', 'two']

what is the best way to turn that into something like the following?

[{value: 'one', label: 'one'}, {value: 'two', label: 'two'}]

sawa · Accepted Answer · 2018-11-30 05:05:26Z

6

Use Array#map, which iterates over your collection and returns an array. In your case, just return the hash directly

array.map { |a| {value: a, label: a} }
# => [{:value=>"one", :label=>"one"}, {:value=>"two", :label=>"two"}]

edited Nov 30, 2018 at 5:05

sawa

169k51 gold badges287 silver badges398 bronze badges

answered Nov 30, 2018 at 2:22

Cody Caughlan

32.8k5 gold badges67 silver badges68 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

iGian · Accepted Answer · 2018-11-30 06:16:07Z

1

The best way is Array#map, but just to try a different way check also Enumerable#each_with_object:

array = ['one', 'two']
array.each_with_object([]) { |e, a| a << {value: e, label: e} }
#=> [{:value=>"one", :label=>"one"}, {:value=>"two", :label=>"two"}]

answered Nov 30, 2018 at 6:16

iGian

11.2k3 gold badges24 silver badges38 bronze badges

Collectives™ on Stack Overflow

What is best way to create an array of hashes from an array?

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related