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@thedarkone
Created January 29, 2011 02:12
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require "benchmark"
LITERALS = {
nil => nil, 'nil' => nil, 'null' => nil, '' => nil,
'true' => true,
'false' => false,
'blank' => :blank?,
'empty' => :empty?
}
def via_literal(key)
LITERALS[key] if LITERALS.key?(key)
end
def via_case(key)
case key
when nil, 'nil', 'null', ''
nil
when 'true'
true
when 'false'
false
when 'blank'
:blank?
when 'empty'
:empty?
end
end
TESTS = 1_000_000
Benchmark.bmbm do |results|
results.report('via_case(nil)') do
TESTS.times { via_case(nil) }
end
results.report('via_literal(nil)') do
TESTS.times { via_literal(nil) }
end
results.report('via_case("null")') do
TESTS.times { via_case("null") }
end
results.report('via_literal("null")') do
TESTS.times { via_literal("null") }
end
results.report('via_case("nomatch")') do
TESTS.times { via_case("nomatch") }
end
results.report('via_literal("nomatch")') do
TESTS.times { via_literal("nomatch") }
end
end
Rehearsal ----------------------------------------------------------
via_case(nil) 0.260000 0.000000 0.260000 ( 0.296114)
via_literal(nil) 0.530000 0.000000 0.530000 ( 0.552677)
via_case("null") 0.750000 0.000000 0.750000 ( 0.761376)
via_literal("null") 0.570000 0.000000 0.570000 ( 0.646138)
via_case("nomatch") 1.610000 0.000000 1.610000 ( 1.669481)
via_literal("nomatch") 0.390000 0.010000 0.400000 ( 0.430214)
------------------------------------------------- total: 4.120000sec
user system total real
via_case(nil) 0.260000 0.000000 0.260000 ( 0.263596)
via_literal(nil) 0.520000 0.000000 0.520000 ( 0.530466)
via_case("null") 0.750000 0.000000 0.750000 ( 0.772132)
via_literal("null") 0.560000 0.000000 0.560000 ( 0.582794)
via_case("nomatch") 1.610000 0.000000 1.610000 ( 1.803847)
via_literal("nomatch") 0.390000 0.000000 0.390000 ( 0.395079)
Rehearsal ----------------------------------------------------------
via_case(nil) 0.140000 0.000000 0.140000 ( 0.146629)
via_literal(nil) 0.210000 0.000000 0.210000 ( 0.210843)
via_case("null") 0.530000 0.000000 0.530000 ( 0.561717)
via_literal("null") 0.350000 0.000000 0.350000 ( 0.372644)
via_case("nomatch") 1.120000 0.010000 1.130000 ( 1.135756)
via_literal("nomatch") 0.260000 0.000000 0.260000 ( 0.271421)
------------------------------------------------- total: 2.620000sec
user system total real
via_case(nil) 0.140000 0.000000 0.140000 ( 0.174764)
via_literal(nil) 0.200000 0.000000 0.200000 ( 0.280553)
via_case("null") 0.530000 0.000000 0.530000 ( 0.570970)
via_literal("null") 0.360000 0.000000 0.360000 ( 0.364196)
via_case("nomatch") 1.110000 0.000000 1.110000 ( 1.165235)
via_literal("nomatch") 0.250000 0.000000 0.250000 ( 0.293636)
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