Ruby %w empty value -

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how add empty string select option %w(mr ms mrs miss)?

i can ['', 'mr', 'ms', 'mrs', 'miss'] use %w. thx!

use unshift prepended object front:

=> %w(mr ms mrs miss).unshift "" #> ["", "mr", "ms", "mrs", "miss"]

pretty version without brackets.

ok update:

=> %w(#{} mr ms mrs miss) #> ["", "mr", "ms", "mrs", "miss"]

explain:

  • %w - allow interpolation
  • %w - not allow interpolation
  • #{} - empty string

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