#type_cast - improve performance & readability

gistfile1.rb

require 'benchmark'
def old_method(a)
  return 'abc' unless a == true || a == false
  a ? 1 : 0
end

def new_method(a)
  case a
  when TrueClass
    1
  when FalseClass
    0
  else
    'abc'
  end
end
      
a = true
b = false
c = 'abc'
TIMES = 500_000
Benchmark.bmbm do |b|
  b.report('old') do
    TIMES.times do
      old_method(a)
      old_method(b)
      old_method(c)
    end
  end

  b.report('new') do
    TIMES.times do
      new_method(a)
      new_method(b)
      new_method(c)
    end
  end
end

Rehearsal ---------------------------------------
old   0.510000   0.000000   0.510000 (  0.509637)
new   0.430000   0.000000   0.430000 (  0.426565)
------------------------------ total: 0.940000sec

          user     system      total        real
old   0.480000   0.000000   0.480000 (  0.475493)
new   0.400000   0.000000   0.400000 (  0.401554)