https://github.com/seratch/scaruby

Scala API in Ruby
https://github.com/seratch/scaruby

Last synced: about 1 month ago
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Scala API in Ruby

• Host: GitHub
• URL: https://github.com/seratch/scaruby
• Owner: seratch
• License: mit
• Created: 2012-02-29T08:43:15.000Z (over 12 years ago)
• Default Branch: master
• Last Pushed: 2014-08-02T01:30:47.000Z (over 10 years ago)
• Last Synced: 2024-04-23T22:19:38.014Z (7 months ago)
• Language: Ruby
• Homepage:
• Size: 191 KB
• Stars: 5
• Watchers: 4
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: readme.md
  • License: LICENSE.txt

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README

        
# Scala API in Ruby

https://rubygems.org/gems/scaruby

Surely it works fine. 

But it mainly serves as a Ruby reference for Scala programmers.

## Supported Ruby versions

Scaruby runs on Ruby 1.9.2, 1.9.3.

## Gemfile

```

source "http://rubygems.org/"

gem 'scaruby'

```

## Usage

See specs.

## Trying on irb

```sh

bundle console

```

```ruby

irb(main):008:0> require 'scaruby'

=> false

irb(main):009:0> Option.new(nil).is_defined

=> false

irb(main):010:0> Option.apply(nil).is_defined

=> false

irb(main):011:0> Option.new(123).is_defined

=> true

irb(main):012:0> Seq.new([1,2,3]).filter {|e| e < 2 }

=> #

irb(main):013:0> Seq.new([1,2,3]).filter {|e| e < 2 }.to_a

=> [1]

irb(main):014:0> Seq.new([1,2,3]).fold_left(0) {|z,x| z + x }

=> 6

irb(main):025:0> Map.new({123=>'abc',23=>'bc',345=>'cde'}).filter {|k,v| k.to_s.size == 3 }

=> #"abc", 345=>"cde"}>

irb(main):026:0> Map.new({123=>'abc',23=>'bc',345=>'cde'}).filter {|k,v| k.to_s.size == 3 }.to_hash

=> {123=>"abc", 345=>"cde"}

```

`scaruby/converter` might be useful.

```ruby

irb(main):001:0> require 'scaruby/converter'

=> true

irb(main):002:0> 'abc'.to_option.is_defined

=> true

irb(main):003:0> 'abc'.to_option.get_or_else('zzz')

=> "abc"

irb(main):004:0> nil.to_option.is_defined

=> false

irb(main):005:0> [1,2,3].to_scaruby.foreach do |e| puts e end

1

2

3

=> [1, 2, 3]

```

It is also possible to extend Ruby with Scaruby. 

If the method is missing, the method in Scaruby will be invoked.

In this case, the methods already defined (i.e. flat_map, find and so on) are never replaced.

```ruby

irb(main):015:0> require 'scaruby/core_ext'

=> true

irb(main):016:0> 1.upto(5).filter {|i| i < 3 }

=> [1, 2]

irb(main):020:0> 1.upto(5).filter {|i| i < 3 }.foreach do |i|

irb(main):021:1*   puts i

irb(main):022:1> end

1

2

=> [1, 2]

irb(main):027:0> {123=>'abc',23=>'bc',345=>'cde'}.filter {|k,v| k.to_s.size == 3 }

=> {123=>"abc", 345=>"cde"}

```

## Build Status

[![Build Status](https://secure.travis-ci.org/seratch/scaruby.png)](http://travis-ci.org/seratch/scaruby)

## License

MIT License

https://github.com/seratch/scaruby/blob/master/LICENSE.txt