This is a GraalVM implementation of Io. Much of the hard work has been done, but hard work still remains.
This implementation does not always behave identically to the original.
Note: This document is intended to be used as a reference for setting up and configuring Io. For a guide on how to use the language itself, please visit the website at http://iolanguage.org/guide/guide.html.
Io is a dynamic prototype-based programming language in the same realm as Smalltalk and Self. It revolves around the idea of message passing from object to object.
For further information, the programming guide and reference manual can be found in the docs folder.
Basic Math
Io> 1 + 1
==> 2
Io> 2 sqrt
==> 1.4142135623730951Lists
Io> d := List clone append(30, 10, 5, 20)
==> list(30, 10, 5, 20)
Io> d := d sort
==> list(5, 10, 20, 30)
Io> d select (>10)
==> list(20, 30)Objects
Io> Contact := Object clone
==> Contact_0x7fbc3bc8a6d0:
type = "Contact"
Io> Contact name ::= nil
==> nil
Io> Contact address ::= nil
==> nil
Io> Contact city ::= nil
==> nil
Io> holmes := Contact clone setName("Holmes") setAddress("221B Baker St") setCity("London")
==> Contact_0x7fbc3be2b470:
address = "221B Baker St"
city = "London"
name = "Holmes"
Io> Contact fullAddress := method(list(name, address, city) join("\n"))
==> method(
list(name, address, city) join("\n")
)
Io> holmes fullAddress
==> Holmes
221B Baker St
London- The Wikipedia page for Io has a good overview and shows a few interesting examples of the language: https://en.wikipedia.org/wiki/Io_(programming_language).
- The entry on the c2 wiki has good discussion about the merits of the language: http://wiki.c2.com/?IoLanguage.
First, make sure that this repo and all of its submodules have been cloned to
your computer by running git clone:
git clone https://github.com/guillermomolina/graal-io
To prepare the project for building, run the following commands:
cd graal-io/ # To get into the cloned folder
make # Build the project
NYI