Method: TrailGuide::Experiments::Config#on_start

Defined in:
lib/trail_guide/experiments/config.rb

#on_start(meth = nil, &block) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/trail_guide/experiments/config.rb', line 234

def on_start(meth=nil, &block)
  raise ArgumentError if meth.nil? && !block_given?
  self[:on_start] ||= []
  self[:on_start] << (meth || block)
end