Zappa
A simple, general purpose functional language.
- Small, simple, expressive language which enforces good style
- Compiled with LLVM
coming soon - Statically-typed with type inference
coming soon - Simple concurrency with coroutines, channels and STM
coming soon - Batteries-included standard library
coming soon
Syntax
| Expression | Example |
|---|---|
| Identifiers | foo, toString, foo?, save! |
| Type identifiers | Int, Bool, String, Date, List |
| Integers | 1, 2, 274,877,906,944 |
| Float, decimal, hex, octal | 99.99, 0d99.99, 0xff, 0o777 |
| Strings | "Hello" |
| Multiline strings |
"""No way to delay That trouble comin' every day""" |
| Characters | 'x' |
| Booleans | true, false |
| Arithmetic expressions | 99 + 1 - 50 |
| Lists | [1, 2, 3] |
| List, string append | [1, 2] ++ [3, 4], "Hello " ++ "World!" |
| String interpolation | "Hello ${object}!" |
| Records | {name: "Zappa", version: 1} |
| Record access | foo.bar |
| Record update | { person | name = "George" } |
| Boolean expressions | a == b, a != b, a <= b |
| Binding | x = 99 + 1 |
| Functions | square x = x * x |
| Anonymous functions | (x) -> x * x |
| Conditional expressions | if a == b then 1 else 0 |
| Pattern matching |
case head l of
Just x -> "head is ${x}"
Nothing -> "list empty"
|
| Type declarations | type Point3D = {x: Float, y: Float, z: Float} |
| Modules | module things |
| Import | import things |
| Comments | -- Watch out where the huskies go |
zappa command line tool
REPL
$ zappa replCompiler
$ zappa makePackage manager
Packages are installed from GitHub and identified by user and repo name.
Install a new package, and record it in zappa-package.json:
$ zappa package install afternoon/blah