ESet
Set/Map with external iterator
Installation
Add this line to your application's Gemfile:
gem 'YkESet'
And then execute:
$ bundle install
Or install it yourself as:
$ gem install YkESet
Usage
require 'Yk/ESet'
include Yk
class Foo
attr :f
def initialize f
@f = f
end
end
s = ESet.new do |o|
o.f
end
# add method does not return iterator object (much efficient)
s.add Foo.new(rand)
s.add Foo.new(rand)
s.add Foo.new(rand)
s.add Foo.new(rand)
y = rand
result = s.add Foo.new(y)
p result # true
result = s.add Foo.new(y)
p result # false
ESet.for_each s.begin, s.end do |foo|
p foo.f
end
# insert method returns iterator object
it, result = s.insert Foo.new(y = rand)
p result # true
it, result = s.insert Foo.new(y)
p result # false
s.erase it
p it.erased? # true
begin
s.erase it # wrongly erase twice
rescue ArgumentError
p $!
end
it = s.begin
while !it.end?
p it.item
it.inc
end
begin
it.item # already reached the end
rescue RangeError
p $!
end
# iterator is not value type but object type
jt = it
it.dec
p it == jt #true
jt = it.clone
jt.dec
p it != jt #true
See Document page
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 tags, and push the .gem
file to rubygems.org.
Contributing
Bug reports and pull requests are welcome on GitHub at https://github.com/[USERNAME]/eset. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the code of conduct.
Code of Conduct
Everyone interacting in the ESet project's codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.