ruby - Binding within a block -


i'd use block within method initialize. code:

class settlement   attr_reader :url, :parameters   def initialize(&block)     instance_eval block.call   end   def parameters(x) ; @parameters = x; end   def url(x) ; @url = x;  end end  settlement = settlement.new   url "https://xxxxx"   parameters("ffff") end

i got error message below:

nomethoderror - undefined method parameters

any ideas?

when call instance_eval block.call block.call evaluated before instance_eval called. means block called without instance binding.

this should work:

def initialize(&block)   instance_eval &block end

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