Try out defaulting functions' -> _ = expr; to -> expr;

Disclaimer: This is a "hey why not give it a try" super-speculative experiment, subject to potential rollback, but IMO intriguing enough to try even though it has restrictions on top-level =/== in the terse body contents

Example:

main: () = {
    x: std::vector<int> = (1, 2, 3);
    y: std::vector<int> = (0, 0, 0);
    std::transform(x.begin(), x.end(), y.begin(), :(x) -> x+1;);
    for y do (i) std::cout << i;
}

Author: hsutter

regression-tests/test-results/version

@@ -1,5 +1,5 @@
 
-cppfront compiler v0.2.1   Build 8930:0819
+cppfront compiler v0.2.1   Build 8930:1743
 Copyright(c) Herb Sutter   All rights reserved
 
 SPDX-License-Identifier: CC-BY-NC-ND-4.0

source/build.info

@@ -1 +1 @@
-"8930:0819"
+"8930:1743"