Passing multiple code blocks as arguments in Ruby

ruby, yield

Solution

You can't pass multiple blocks, per se, but you can pass multiple procs or lambdas:

Using 1.9 syntax:

opportunity ->{ @some_array.empty? }, ->{ @some_other_array.empty? }

and in the method itself:

def opportunity(lambda1, lambda2)
  if lambda1.()
    @opportunities += 1
  end
  if lambda2.()
    @performances += 1
  end
end

Problem

I have a method which takes a code block. ``` def opportunity @opportunities += 1 if yield @performances +=1 end end ``` and I call it like this: `opportunity { @some_array.empty? }` But how do I pass it more than one code block so that I could use yield twice, something like this: ``` def opportunity if yield_1 @opportunities += 1 end if yield_2 @performances +=1 end end ``` and: ``` opportunity {@some_other_array.empty?} { @some_array.empty? } ``` I am aware that this example could be done without yield, but it's just to illustrate.

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