Reia is a programming language created in 2008.
| #541on PLDB | 16Years Old |
git clone https://github.com/tarcieri/reiaRuby-like hybrid OOP/functional programming language for BEAM, the Erlang VM
# Hello, world!
"Hello, world!".puts()
# Assignment
number = 42
opposite = true
# Conditions
number = -42 if opposite
# Lists (stored as immutable singly-linked lists)
list = [1, 2, 3, 4, 5]
# Tuples (think of them as immutable arrays)
tuple = (1, 2, 3, 4, 5)
# Atoms (known as symbols to Ruby people)
# Think of them as an open-ended enumeration
atom = :up_and_atom
# Dicts (also known as hashes to Ruby people)
dict = {:foo => 1, :bar => 2, :baz => 3}
# Strings (unlike Erlang, Reia has a real String type!)
string = "I'm a string! Woohoo I'm a string! #{'And I interpolate too!'}"
# Ranges
range = 0..42
# Funs (anonymous functions, a.k.a. lambdas, procs, closures, etc.)
# Calling me with plustwo(40) would return 42
plustwo = fun(n) { n + 2 }
# Modules (collections of functions)
# Calling Plusser.addtwo(40) would return 42
module Plusser
def addtwo(n)
n + 2
end
end
# Classes (of immutable objects. Once created objects can't be changed!)
class Adder
# Reia supports binding instance variables directly when they're passed
# as arguments to initialize
def initialize(@n); end
def plus(n)
@n + n
end
end
# Instantiate classes by calling Classname(arg1, arg2, ...)
# For you Ruby people who want Classname.new(...) this is coming soon!
fortytwo = Adder(40).plus(2)
# Function references can be obtained by omitting parens from a function call,
# like JavaScript or Python
numbers = [1,2,3]
reverser = [1,2,3].reverse
# Function references can be invoked just like lambdas
reversed = reverser() # reversed is now [3,2,1]
# You can add a ! to the end of any method to rebind the method receiver to
# the return value of the given method minus the bang.
numbers.reverse!() # numbers is now [3,2,1]
# List comprehensions
doubled = [n * 2 for n in numbers] # doubled is [6,4,2]| Feature | Supported | Example | Token |
|---|---|---|---|
| Comments | ✓ | # A comment | |
| Line Comments | ✓ | # A comment | # |
| Assignment | ✓ | = |
| title | date | score | comments |
|---|---|---|---|
| Reia - Ruby's powerful syntax with Erlang concurrency and fault-tolerance | 11/10/2010 | 2 | 1 |