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由 Mindaugas Mozūras 提交于
Slightly improves performance, for example, a simple benchmark: ```ruby require 'benchmark/ips' require 'set' SPECIAL_KEYS = %w[extras no-cache max-age public must-revalidate] SPECIAL_KEYS_SET = Set.new(SPECIAL_KEYS) directive = 'must-revalidate' Benchmark.ips do |x| x.report('array') { SPECIAL_KEYS.include?(directive) } x.report('set') { SPECIAL_KEYS_SET.include?(directive) } end ``` Output: ``` ------------------------------------- array 67926 i/100ms set 74054 i/100ms ------------------------------------- array 2318423.4 (±2.8%) i/s - 11615346 in 5.014899s set 3387981.8 (±4.7%) i/s - 16958366 in 5.019355s ```
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