Acconut / lily

An interpreted language with a focus on expressiveness and type safety

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Lily

Lily is a programming language focused on expressiveness and type safety.

Sample

scoped enum Color { Black, Blue, Cyan, Green, Magenta, Red, White, Yellow }

# Class properties and methods are public by default.
class Terminal(var @foreground: Color, width_str: String)
{
    public var @width = width_str.parse_i().unwrap_or(80)

    public define set_fg(new_color: Color) {
        @foreground = new_color
    }
}

var terms = [Terminal(Color.White, "A"), Terminal(Color.Red, "40")]

terms.each(|e| e.width += 20 )
     |> print

Features

Templating

By default, Lily runs in standalone mode where all content is code to execute. But Lily can also be run in template mode. In template mode, code is between <?lily ... ?> tags. When a file is imported, it's always loaded in standalone mode, so that it doesn't accidentally send headers. Files that are imported are also namespaced (no 'global namespace').

Embeddable

Lily may be a statically-typed language, but the reference implementation is an interpreter. The interpreter as well as its API have been carefully designed with sandboxing in mind. As a result, it's possible to have multiple interpreters exist alongside each other.

Shorter edit cycle

Another benefit from having the reference implementation as an interpreter is a shorter turn around time. The interpreter's parser is comparable in speed to that of languages using an interpreter as their reference.

Community

Lily is a very young language and the community is still growing.

• Discord: Lily to chat with others in real-time.

• IRC: freenode #lily is another way to chat with others.

• Reddit: /r/lily for discussion around the language and providing support to new users.

Resources

• Reference

• Try it in your browser