logcall

An attribute macro that logs the return value from function call.

This is a reimplementation of the log-derive crate with async-trait compatibility.

Usage

use logcall::logcall;

#[logcall("info")]
fn foo(a: usize) -> usize {
    a + 1
}

fn main() {
    env_logger::builder().filter_level(log::LevelFilter::Info).init();
    foo(1);
}

// prints:
// [2023-07-21T12:57:43Z INFO  main] foo() => 2