Commits on Jul 19, 2024

1. Don't call Kernel#require in hot loop …

   Ref: https://bugs.ruby-lang.org/issues/20641
   
   Even without the reference bug, `require 'date'` isn't cheap.
   
   ```ruby
   
   require "benchmark/ips"
   require "yaml"
   require "date"
   
   100.times do |i|
     $LOAD_PATH.unshift("/tmp/does/not/exist/#{i}")
   end
   payload = 100.times.map { Date.today }.to_yaml
   
   Benchmark.ips do |x|
     x.report("100 dates") { YAML.unsafe_load(payload) }
   end
   ```
   
   Before:
   ```
   $ ruby /tmp/bench-yaml.rb
   ruby 3.2.2 (2023-03-30 revision e51014f9c0) [arm64-darwin22]
   Warming up --------------------------------------
              100 dates   416.000 i/100ms
   Calculating -------------------------------------
              100 dates      4.309k (± 1.2%) i/s -     21.632k in   5.021003s
   ```
   
   After:
   ```
   $ ruby -Ilib /tmp/bench-yaml.rb
   ruby 3.2.2 (2023-03-30 revision e51014f9c0) [arm64-darwin22]
   Warming up --------------------------------------
              100 dates   601.000 i/100ms
   Calculating -------------------------------------
              100 dates      5.993k (± 1.8%) i/s -     30.050k in   5.016079s
   ```

   

   byroot committed Jul 19, 2024
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