Rewrite and operator with #index

[yichaulin]

Description

#index uses less allocations and has better performance than #find

Performance Benchmark

Test Suit

require 'benchmark/ips'
require "bundler/gem_tasks"
require 'json_logic'

logic = {
  "and" => [true, 1, 'a']
}


compiled = JSONLogic.compile(logic)

Benchmark.ips do |x|
  x.report("and_operator") { compiled.evaluate(nil) }

  x.compare!
end

Before PR

Warming up --------------------------------------
        and_operator   131.476k i/100ms
Calculating -------------------------------------
        and_operator      1.319M (± 0.5%) i/s -      6.705M in   5.085356s

After PR

Warming up --------------------------------------
        and_operator   145.108k i/100ms
Calculating -------------------------------------
        and_operator      1.471M (± 0.7%) i/s -      7.401M in   5.031494s

About 11% improvement

[fill32]

#index uses less allocations and has better performance than #find

should put the source of this insight into this PR.

About 11% improvement.

this result was from your local computer? can check this on staging also if you have time.