stringcheck_demonstration.jl

using Faker

function genstring(num)
  list=Vector{String}(undef, num)
  for i=1:num
    list[i]= Faker.lexify("???????")
  end
  return list
end

using Distributions
list = genstring(2000)
random_indices = Int64.(round.(rand(Uniform{Int64}(1, 2000),100)))
input = list[random_indices]
regex_list = Regex.(list)


function check(regex_list, input)
  input_len=length(input)
  icon_indices = Vector{Int64}(undef, input_len)
      @inbounds for j=1:input_len
         for i=1:length(regex_list)
            if match(regex_list[i],input[j]) !== nothing
              # println(i,"-",j) # to check functionality
              icon_indices[j] = i
              break
            end
      end
    end
    return icon_indices
end

function check_simd(regex_list, input)
  input_len=length(input)
  icon_indices = Vector{Int64}(undef, input_len)
      @simd for j=1:input_len
          @inbounds icon_indices[j] = findfirst(x-> match(x, input[j]) !== nothing, regex_list)
      end
  return icon_indices
end

check(regex_list, input)
check_simd(regex_list, input)

using BenchmarkTools

@btime check($regex_list, $input)
#   15.770 ms (401 allocations: 24.31 KiB)

@btime check_simd($regex_list, $input)
#   15.824 ms (401 allocations: 24.31 KiB)