return-bench.rb

def early_return(val)
  return val if val

  "nope"
end

def compare_if(val)
  if val
    val
  else
    "nope"
  end
end

def ternary(val)
  val ? val : "nope"
end

require 'benchmark/ips'

Benchmark.ips do |x|
  x.report("return") { early_return(true) }
  x.report("if    ") { compare_if(true) }
  x.compare!
end
# Warming up --------------------------------------
#               return   308.006k i/100ms
#               if       308.924k i/100ms
# Calculating -------------------------------------
#               return      9.983M (± 2.6%) i/s -     49.897M in   5.001941s
#               if          9.991M (± 2.8%) i/s -     50.046M in   5.013219s

# Comparison:
#               if    :  9991239.4 i/s
#               return:  9983041.6 i/s - same-ish: difference falls within error


Benchmark.ips do |x|
  x.report("return") { early_return(true) }
  x.report("ternary") { ternary(true) }
  x.compare!
end
# Warming up --------------------------------------
#               return   294.512k i/100ms
#              ternary   283.869k i/100ms
# Calculating -------------------------------------
#               return      9.250M (± 6.2%) i/s -     46.238M in   5.023791s
#              ternary      9.705M (± 3.4%) i/s -     48.542M in   5.007776s

# Comparison:
#              ternary:  9705281.6 i/s
#               return:  9250189.8 i/s - same-ish: difference falls within error