lstr.lua

lstr módulo de operações comuns em string para Lua.

funções:

• lstr.
  • count(s, subs) --> number
  • replace(s, old, new) --> string
  • join(t, sep) --> string
  • split(s, sep) --> table
  • strip(s) --> string
  • startswith(s, subs) -> boolean
  • endswith(s, subs) -> boolean
  • trim(s) -> string, equal strip

[TODO]:

• em cada função acima colocar parâmetro start, end ?

Usando como base de dados para os testes o arquivo: test_EntireBible-CPDV.json

Arquivo json com todo o texto da Biblia Católica em inglês:

• 38656 linhas
• 5657180 caracteres

test

Linux 18.04.4-Ubuntu. Intel® Core™ i7-4500U CPU @ 1.80GHz × 4. 7 GiB RAM.

• Script para teste de comparação (Python): test_python.py

• Teste em Lua, código: test_lstr.py

Resultado (Lua):

time lua test_lstr.lua
Testing function: lstr.count
Tested with success! Time: 0.924594s

Testing function: lstr.endwith
Tested with success! Time: 5e-06s

Testing function: lstr.join
Tested with success! Time: 8e-06s

Testing function: lstr.replace
Tested with success! Time: 5e-06s

Testing function: lstr.split
Tested with success! Time: 0.045324s

Testing function: lstr.split - version 2
Tested with success! Time: 4.5e-05s

Testing function: lstr.split - version 3
Tested with success! Time: 1.6e-05s

Testing function: lstr.startwith
Tested with success! Time: 4e-06s

Testing function: lstr.strip - (check inside .trim)
Tested with success! Time: 0.253706s

lua test_lstr.lua  1,40s user 0,07s system 103% cpu 1,420 total

Resultado (Python):

time python test_python.py 
Testing function:  strip
Tested with success! Time: 2.9809889383614063e-06 

Testing function:  count
Tested with success! Time: 0.08391829900210723 

Testing function:  endswitch
Tested with success! Time: 7.429975084960461e-06 

Testing function:  join
Tested with success! Time: 5.407026037573814e-06 

Testing function:  replace
Tested with success! Time: 7.64097785577178e-06 

Testing function:  split
Tested with success! Time: 0.13978277595015243 

Testing function:  split - version 2
Tested with success! Time: 1.8385995645076036e-05 

Testing function:  split - version 3
Tested with success! Time: 1.6789999790489674e-05 

Testing function:  startswith
Tested with success! Time: 5.252019036561251e-06 

python test_python.py  0,30s user 0,07s system 104% cpu 0,358 total

;)