shipit.rb

require "bundler/setup"
require "allocation_counter"

string = "hello"
scanner = StringScanner.new(string)

AllocationCounter.simple do
  scanner.skip(/hello/)
end

# it (1 times)
# ============
#  allocated: 1
#     string: 1

AllocationCounter.simple do
  scanner.skip(/hello/u)
end


# it (1 times)
# ============
# allocated: GOOD WORK! NO ALLOCATIONS :+1: