Very simple and plain pattern matching library using Object#===
require "simple_pattern"
All = SimplePattern::All
Any = SimplePattern::Any
Not = SimplePattern::Not
words = [
["payment", 59], # :english
["the", 66], # :article
["frühling", 37], # :german
["cellar", 17.7], # :float
]
words.map {|word|
case word
when SimplePattern[String, Float]
:float
when SimplePattern[Any["a", "an", "the"], Any]
:article
when SimplePattern[Not[/[äöüß]/], Any]
:english
else
:german
end
}
# => [:english, :article, :german, :float]More examples are at spec/simple_pattern_spec.rb.
$ gem install simple_pattern
After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.
To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.
Bug reports and pull requests are welcome on GitHub at https://github.com/Tatzyr/simple_pattern.