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Contents
# frozen_string_literal: true
require "date"
module Matheus
# Usage:
# $ date-of-last monday
# 2022-01-24
class DateOfLast < Command
def call(args)
day_name = args[0].to_s
target_wday = wday_for(day_name) or return Failure("invalid day name: #{day_name.inspect}")
date = Enumerator.produce(Date.today - 1, &:prev_day).find { _1.wday == target_wday }
puts date
end
private
def wday_for(day_name)
Date::DAYNAMES.index(day_name.capitalize) || Date::ABBR_DAYNAMES.index(day_name.capitalize)
end
end
end
Version data entries
12 entries across 12 versions & 1 rubygems