module Geolookup::USA::Metro
Constants
- METRO_CODE_TO_NAME_FILE
Public Class Methods
code_to_name(metro_code)
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self.code_to_name
Given a metro code output the metro name Else return nil
EX: code_to_name
(4) => “Abilene”
# File lib/geolookup/usa/metro.rb, line 16 def self.code_to_name(metro_code) @metro_code_to_name ||= Geolookup.load_hash_from_file(METRO_CODE_TO_NAME_FILE) get_value_from_hash(@metro_code_to_name, metro_code.to_s.to_i) end
Private Class Methods
get_value_from_hash(hash, key1)
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self.get_value_from_hash
Helper function to reduce code repetition Given a hash and 1 key returns the value at that hash Return nil if the either key is not in the hash
EX: get_value(@metro_code_to_name, 4) => “Abilene”
# File lib/geolookup/usa/metro.rb, line 29 def self.get_value_from_hash(hash, key1) return nil unless hash[key1] hash[key1] end