The whichever_compiles!{} macro fork()s the compiler to try out different
alternatives to find one that compiles.
https://twitter.com/m_ou_se/status/1368632701448818691
Please do not use this.
use whichever_compiles::whichever_compiles;
fn main() {
whichever_compiles! {
try { thisfunctiondoesntexist(); }
try { invalid syntax 1 2 3 }
try { println!("missing arg: {}"); }
try { println!("hello {}", world()); }
try { 1 + 2 }
}
}
whichever_compiles! {
try { }
try { fn world() {} }
try { fn world() -> &'static str { "world" } }
}$ cargo run
hello world