NaturalSort
Sort a list naturally.
Sort functions will not, generally, sort strings containing numbers the same way a human would.
Given a list:
["a10", "a05c", "a1", "a", "a2", "a1a", "a0", "a1b", "a20"]Applying standard sort will produce
["a", "a0", "a05c", "a1", "a10", "a1a", "a1b", "a2", "a20"]But applying a natural sort will give:
["a", "a0", "a1", "a1a", "a1b", "a2", "a05c", "a10", "a20"]Prior art:
VersionEye's naturalsorter gem was the inspiration, with that being based on Martin Pool's natural sorting algorithm, making direct use of the Ruby implementation of the original C version.
Elixir's Version module does a similar thing.
Summary↑
| sort(list1) | Sorts a list of strings. This works by leveraging Elixir's |
| sort(list, case_sensitive? \\ false) | |
| sort_asc(list, case_sensitive? \\ false) | An alias for |
| sort_desc(list1) | Sorts a list in descending order, rather than ascending as is the default for |
| sort_desc(list, case_sensitive? \\ false) |
Functions
Sorts a list of strings. This works by leveraging Elixir's Enum.sort_by/3 function, which takes as the second argument a mapping function. Each string is converted into a list of strings and integers. Once in this form, applying the sort function results in a correctly sorted list.
## Examples
iex> NaturalSort.sort(["x2-y7", "x8-y8", "x2-y08", "x2-g8" ])
["x2-g8", "x2-y7", "x2-y08", "x8-y8" ]
NaturalSort.sort(["foo03.z", "foo45.D", "foo06.a", "foo06.A", "foo"], true)
["foo", "foo03.z", "foo06.A", "foo06.a", "foo45.D"]An alias for NaturalSort.sort, which sorts ascending by default.
## Examples
iex> NaturalSort.sort_asc(["x2-y7", "x8-y8", "x2-y08", "x2-g8" ])
["x2-g8", "x2-y7", "x2-y08", "x8-y8"]Sorts a list in descending order, rather than ascending as is the default for NaturalSort.sort.
## Examples
iex> NaturalSort.sort_desc(["a5", "a400", "a1"])
["a400", "a5", "a1"]