Circa

Circa is a programming language designed for for rapid prototyping by @andyfischer.

The intro page has some good information and the syntax example highlights some interesting ideas:

-- The @ operator is some syntactic sugar for rebinding -- an identifier to the result of the overall statement. -- These two lines do exactly the same thing: my_number = max(my_number, 40) max(@my_number, 40)

-- Lists are indicated by []s -- List arguments also can be separated -- by commas or semicolons or spaces names = ['Absalom','Bouffant','Chilton'] numbers = [1 2 3] orders = [locate; evacuate; exterminate]

Looks neat!