wasmCloud Factorial Interface

This is the definition for the interface used for examples and illustrations with the contract ID of wasmcloud:example:factorial.

This is an interface for a simple service that calculates the factorial of a whole number.

NOTE that this is just an example, and we would not recommend a real-world production scenario where you use an interface and accompanying capability provider for factorial calculations.

Capability Provider Implementations

The following is a list of implementations of the wasmcloud:example:factorial contract. Feel free to submit a PR adding your implementation if you have a community/open source version.

| Name | Vendor | Description | | :--- | :---: | :--- | | Factorial | wasmCloud | wasmCloud example implementation of the Factorial interface

Example Usage (🦀 Rust)

Calculate a factorial, handling the error case ```rust use wasmbusrpc::actor::prelude::Context; use wasmcloudinterface_factorial::{Factorial, FactorialSender};

async fn factorial(ctx: &Context, n: u32) -> u64 { let factorial = FactorialSender::new(); match factorial.calculate(ctx, &n).await { Ok(num) => num, // 0 is not a possible factorial so it's obvious that an error occurred Err(_e) => 0, } } ```