Ruby% w blank

Question

How do I add an empty string as a select option in %w(Mr Ms Mrs Miss)

?

I can do ['', 'Mr', 'Ms', 'Mrs', 'Miss']

, but I would like to use %w

. thank!

+3

Andrey Deineko Dec 16 14 at 11:18

2 answers

Try the following:

%w(Mr Ms Mrs Miss).unshift('')
["", "Mr", "Ms", "Mrs", "Miss"]

+1

Rajarshi das Dec 16 14 at 11:23

Green · Accepted Answer · 2014-12-16T11:23:12+0000

Use unshift

, this is an extra object in front:

=> %w(Mr Ms Mrs Miss).unshift ""
#> ["", "Mr", "Ms", "Mrs", "Miss"]

Pretty version without parentheses.

Good for your update:

=> %W(#{} Mr Ms Mrs Miss)
#> ["", "Mr", "Ms", "Mrs", "Miss"]

explain: