24 lines
375 B
Rust
24 lines
375 B
Rust
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#![feature(lang_items, unboxed_closures, fn_traits)]
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struct S3 {
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x: i32,
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y: i32,
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}
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impl FnOnce<(i32,i32)> for S3 {
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type Output = i32;
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extern "rust-call" fn call_once(self, (z,zz): (i32,i32)) -> i32 {
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self.x * self.y * z * zz
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}
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}
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fn main() {
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let s = S3 {
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x: 3,
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y: 3,
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};
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let ans = s(3, 1);
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assert_eq!(ans, 27);
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}
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