Performance Increase in #many?

many_performance.rb

require 'benchmark/ips'

def old_many?(enum)
  cnt = 0
  enum.any? { (cnt += 1) > 1 }
end

def new_many?(enum)
  enum.count > 1
end

enum = (1..1000).to_a
    
Benchmark.ips do |b|
  b.report('old') do
    old_many? enum
  end

  b.report('new') do
    new_many? enum
  end
end

# Output
# Calculating -------------------------------------
#                 old     57932 i/100ms
#                 new     93881 i/100ms
# -------------------------------------------------
#                 old  1312923.5 (±3.1%) i/s -    6604248 in   5.035705s
#                 new  4991185.8 (±3.2%) i/s -   24972346 in   5.009269s