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Inline match

This is an idea of extending match expression with the most tiny syntax. The syntax is following:

let subject = Some(123);
let a =
    | Some(val) => /* ... */,
    | None => /* ... */;

This idea has many problems, two main are:

  1. Does not fit with Ruby-like closures (if we'll have this syntax as Rust does)

  2. The comma separator is required, otherwise there's an ambiguity with | "logic or operator", otherwise syntax is line-feed dependent, I don't like it. So if some would like to write the whole inline-match literally inlined, it would look like

    let a = | Some(val) => /* ... */, | None => /* ... */;

    UGLY!