41 lines
682 B
Rust
41 lines
682 B
Rust
#![feature(specialization)]
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// First, test only use of explicit `default` items:
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pub trait Foo {
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fn foo(&self) -> bool;
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}
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impl<T> Foo for T {
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default fn foo(&self) -> bool { false }
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}
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impl Foo for i32 {}
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impl Foo for i64 {
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fn foo(&self) -> bool { true }
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}
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// Next, test mixture of explicit `default` and provided methods:
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pub trait Bar {
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fn bar(&self) -> i32 { 0 }
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}
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impl<T> Bar for T {
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default fn bar(&self) -> i32 { 0 }
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}
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impl Bar for i32 {
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fn bar(&self) -> i32 { 1 }
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}
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impl<'a> Bar for &'a str {}
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impl<T> Bar for Vec<T> {
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default fn bar(&self) -> i32 { 2 }
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}
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impl Bar for Vec<i32> {}
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impl Bar for Vec<i64> {
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fn bar(&self) -> i32 { 3 }
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}
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