Question

def self.jq_column_models
  COLUMN_NAME.collect {|x|
    {:name => x.to_s, :width => 80, :format => 'integer' if x.is_a?(Fixnum)}
  }
end

I wrote the code :format => 'integer' if x.is_a? to add a :format when |x| is only integer type. But it isn’t compiled. How do you express this code by ruby?

Answer 1

You can use tap(yield self; self):

  COLUMN_NAME.collect {|x|
    {:name => x.to_s, :width => 80}.tap{|y| y[:format] ='integer' if x.is_a?(Integer)}
  }