Method: Squib::Args::Paint#validate_alpha

Defined in:
lib/squib/args/paint.rb

#validate_alpha(arg, _i) ⇒ Object 



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# File 'lib/squib/args/paint.rb', line 33

def validate_alpha(arg, _i)
  raise 'alpha must respond to to_f' unless arg.respond_to? :to_f
  arg.to_f
end