PluckIt

require 'pluckit'


# extract a field from a list of records
[
  { id: 1, name: 'alice', age: 30},
  { id: 2, name: 'bob', age: 24},
  { id: 3, name: 'charlie', age: 88},
].pluck :name
=> [ 'alice', 'bob', 'charlie' ]


# find max temp for each month
{
  june: [ 78, 82, 80 ],
  july: [ 80, 83, 86 ],
  august: [ 80, 76, 79 ],
}.pluck :max
=> {
  june: 82,
  july: 86,
  august: 80,
}