Singl
Have you ever tried to use instance methods on case
expressions,
and got bored by all the repetition?
tmp_var = my_method.that_gets_an_integer(foo)
case
when tmp_var.odd? then (baz)
when tmp_var.zero? then frob(nicate)
else raise Error
end
Say no more to this, using Singl.ify!
Singl.ify! Integer
case my_method.that_gets_an_integer(foo)
when Integer.odd? then (baz)
when Integer.zero? then frob(nicate)
else raise Error
end
You can also use it in your own classes:
class Foobar
....
def f
self.logic
end
include Singl
end
baz = Foobar.new
Foobar.f baz
Or, for bonus points, completely ad-hoc:
case my_method.that_gets_an_integer(foo)
when Singl.odd? then (baz)
when Singl.zero? then frob(nicate)
else raise Error
end
Singl.f baz
For more info, see the associated blog post
Installation
Add this line to your application's Gemfile:
gem 'singl'
And then execute:
$ bundle install
Or install it yourself as:
$ gem install singl
Usage
(See above)
Development
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 the created tag, and push the .gem
file to rubygems.org.
Contributing
Bug reports and pull requests are welcome on GitHub at https://github.com/RafaelPAndrade/singl.