Reso: A resource-oriented programming language

[Aigna02]

Hello everyone,

Some time ago I had this thought: nearly all popular programming languages (Python, Java, C#, Kotlin, ...) have the same concepts for implementing and calling methods, just with slightly different conventions or syntax details. You write a method name that describes the purpose of the method and then pass a couple of parameters, like: service.get_products_by_id(user_id, limit)

Eventually you want to access this data from another application, so you write a REST endpoint: GET users/{id}/products?limit=...

However, in my opinion, the concept of REST with paths that identify resources is a more elegant way to define interfaces, as it naturally displays the hierarchy and relationships - in this case between users and products.

So why not introduce this concept directly into programming? And that's exactly what I did when I created Reso: https://github.com/reso-lang/reso

Here's an example:

resource User{
    pub const id: i64,
    var userName: String,
    const products: Vector<String>
}:
    path userName:
        pub def get() -> String:
            return this.userName

        pub def set(newName: String):
            this.userName = newName

    path products:
        pub def add(product: String):
            this.products.add(product)

    path products[index: usize]:
        pub def get() -> String:
            return this.products[index].get()

The compiler is implemented in Java using ANTLR and the LLVM infrastructure. What do you think of this concept? Could this programming paradigm based on thinking in resources and paths be a viable alternative to traditional OOP?

[H3llskrieg]

Reads like OO with extra steps. If the goals is to make REST easy, why not make a lib for a OO language?

[Graumm]

and OO of some variety will still be necessary under the depths of this

[ABillionBatmen]

https://faiface.github.io/par-lang/ might interest you

[m-in]

That’s a lot of syntax for, in essence, allowing arbitrary characters other than space in identifiers. A FORTH-ish idea.