MooTools

How to use

The simplest way to use the Abbrev class is by calling Array's abbrev() method. For example, ['ruby','rules'].abbrev() would produce the hash:

{
    "rub": "ruby",
    "ruby": "ruby",
    "rul": "rules",
    "rule": "rules",
    "rules": "rules"
}

An Array containing only a single String element will still produce a useful mapping. For example, ['ruby'].abbrev() would produce:

{
    "r": "ruby",
    "ru": "ruby",
    "rub": "ruby",
    "ruby": "ruby"
}

An empty Array produces an empty hash. [].abbrev() produces {}.

Duplicate entries are treated as a single entry. For example, ['a','abc','abc'].abbrev() would produce:

{
    "a": "a",
    "ab": "abc",
    "abc": "abc"
}

Abbrev attempts to coerce non-Strings to Strings. For example, [123,'1234'].abbrev() would produce:

{
    "123": 123,
    "1234": "1234"
}

Other Features

The abbrev() method accepts one optional argument, a pattern that filters abbreviations. Only abbreviations that match the pattern (or begin with the String if a String is provided instead of a RegExp) will be included in the hash output. For example, ['a','abc'].abbrev(/c/) will produce {"abc": "abc"}. Notice how the mapping from "ab" to "abc" is not included because the abbreviation, not the target, must match the pattern.

Additional Info

I am always open for feature requests or any feedback. I can be reached at Github.

Thanks to the Ruby community for the original idea and implementation.

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