OmNomNum

Wrapper for the OmNomNum c project, which implements most of the logic from numerizer.

Install

gem install omnomnum

Usage

require 'omnomnum'

OmNomNum.normalize('first')
=> "1st"
OmNomNum.normalize('second')
=> "second"
OmNomNum.normalize('second', parse_second: true)
=> "2nd"

Benchmarks

Memory

Library	Bytes at exit	Total # of Allocations	Total Frees	Total # of Bytes Allocated	Savings
Numerizer¹	2,746,272	59,243	35,161	11,055,638	-
Numerizer²	3,719,364	10,852,981	10,821,658	1,115,915,077	-
Numerizer³	973,092	10,793,738	10,786,497	1,104,859,439	1×
OmNomNum¹	2,657,613	57,967	34,681	10,797,999	-
OmNomNum²	2,659,473	62,006	38,700	10,839,010	-
OmNomNum³	1,860	4,039	4,019	41,011	25,000+×

1: loads the library and does nothing else
2: runs the string "two hundred" 2,000 times
3: difference between ¹ and ²

Note: Benchmark done using valgrind. valgrind ruby -w Ilib test/memory_test_*.rb

CPU

Library	Iterations per second	Speedup
Numerizer	323.271	1×
OmNomNum	2.516M	7,750+×

Notes

The OmNomNum actually has two methods: one that returns a normalized string, and one that returns a list containing the locations of the numbers in the string and their values. ruby_omnomnum currently only supports the first function, but the second could eventually be exposed.

omnomnum