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Welcome to your new gem! In this directory, you'll find the files you need to be able to package up your Ruby library into a gem. Put your Ruby code in the file lib/stitcher. To experiment with that code, run bin/console for an interactive prompt.

TODO: Delete this and the text above, and describe your gem


Add this line to your application's Gemfile:

gem 'stitcher'

And then execute:

$ bundle

Or install it yourself as:

$ gem install stitcher


require "stitcher"

# Using stitcher library.
using Stitcher

class X
    # Define accessor with variable type(Class).
    stitcher_accessor name: String, age: Integer

    def set name, age = name
        self.age  = age
    # Register set method with Argument types(Classes).
    stitch :set, [String, Integer]

    # Register for next define method.
    stitcher_require [Hash]
    def set hash
        set hash[:name], hash[:age]

    # Define "set" method with Argument types.
    # set(Integer, String)
    stitcher_define_method(:set, age: Integer, name: String){ = name
        self.age  = age

    # Other define method
    stitch.set(ary: [String, Integer]){
        set *ary

    def print
        p "name:#{name} age:#{age}"

    # Require format with block object.
    stitcher_require [String] & Stitcher::Concepts.blockable
    def print fmt
        printf(fmt, *yield(name, age))

x = = "homu"
x.age  = 14
# x.age = 14.0      # Error: No match method.

x.set "mami", 15
# => "name:mami age:15"

x.set({ name: "saya", age: 14 })
# => "name:saya age:14"

x.set 14, "mado"
x.print("%s-%s\n"){ |name, age| [name, age] }
# => mado-14

x.set ["homu", 14]
x.print("%s-%s\n"){ |name, age| [age, name] }
# => 14-homu


After checking out the repo, run bin/setup to install dependencies. Then, 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 to create a git tag for the version, push git commits and tags, and push the .gem file to


  1. Fork it ( )
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create a new Pull Request