This open source project is sorting arrays in a natural way. Assume you have an string array like this here
["init30", "init20", "init200"]
If you are sorting this in ruby with ".sort" you will get this result
["init20", "init200", "init30"]
Because the default sort method does not recognize the numbers in the string. The NaturalSorter will return this result.
["init20", "init30", "init200"]
This fork contains some special algorithms to sort version numbers in a natural order. This project is used at https://www.versioneye.com to show versions of selected open source projects.
This GEM has 8 methods
And this here for more advanced sorting. Where you can put in a array of objects and the method which should called on every object for comparison.
Naturalsorter::Sorter.sort_by_method(array, method, caseinsesitive)
Naturalsorter::Sorter.sort_by_method_desc(array, method, caseinsesitive)
This methods are based on a different algo. spezially optimizied for sorting version strings.
This here is again for an array with objects.
You should add this line to your Gemfile
gem 'naturalsorter', '0.3.6'
and run this command in your app root directory
How To Use - Examples
After the installation you can use it like this:
Naturalsorter::Sorter.sort(["a400", "a5", "a1"], true)
it will return the array ["a1", "a5", "a400"].
If you have more advanced objects you want to sort, you should use the second method. Assume you have a Class User with 3 attributes: "firstname", "lastname", "age" and you want to sort an array of class Users by "firstname".
Naturalsorter::Sorter.sort_by_method(users, "firstname", true)
Isn't that awesome?
The next methods are based on my own implementation, optimized for sorting version strings like "1.1, 1.4, 1.10"
Naturalsorter::Sorter.sort_version(["1.10", "1.1", "1.2"])
will return the array ["1.1", "1.2", "1.10"]
The first 4 methods in this librarie are internal based on the natcmp implementation from Alan Davies. All glorry to him for his awesome work.