Pre-RFC: syntax sugar for `matches!`

language design
7

To address your other point

However, I think this would only be worth it, if it would allow bindings [...]

My RFC contains the line "I find it useful when I want to use an if-let statement without actually binding anything" as a direct argument for using matches! when you don't want to contend with if-let yoda syntax:

let x = 42;
if let 42 = x {
    /* do something */
}

I prepared an argument to defend separating the syntaxes :

Unfortunately it derives that using matches! for binding will lead to an uno reverse-reverse and not only cause yoda syntax, but cause yoda syntax in the much more common case

However I think arrow syntax actually makes this work

let myvar = Some(42);
if myvar => Some(x) {
    /* do something with x */
}

Thoughts?