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Benchmarking Ruby 2.7.0's Numbered Parameters — 28 Feb 2020
source link: https://blog.schembri.me/post/benchmarking-ruby-2.7.0-numbered-parameters/
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Benchmarking Ruby 2.7.0's Numbered Parameters
Ruby 2.7.0 added numbered block parameters
. There was some controversy
which resulted in the initial syntax of @n
changing to _n
. I like the change.
This is what it looks like:
# regular named params HASH.map { |a, b| [a, b] } # new numbered params HASH.map { [_1, _2] }
Anyway, I wondered if there was any performance impact in this change so I threw together a quick benchmark . Result: it’s just as fast as named params.
Warming up -------------------------------------- named params 143.381k i/100ms numbered params 142.011k i/100ms Calculating ------------------------------------- named params 2.027M (± 1.6%) i/s - 10.180M in 5.022400s numbered params 1.996M (± 2.4%) i/s - 10.083M in 5.053749s Comparison: named params: 2027451.7 i/s numbered params: 1996273.3 i/s - same-ish: difference falls within error
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