I want to add function like _1(), _2(), etc for Rust tuple. Unfortunately I
do not understand how to tell compiler lifetime of returning result in case
of `trait`
pub trait TupleVal<T> {
pub pure fn _1() -> T;
pub pure fn _2() -> T;
}
impl <T>(T, T): TupleVal<T> {
pure fn _1() -> T {
let (a, _) = self;
a
}
pure fn _2() -> T {
let (_, b) = self;
b
}
}
And the errors:
test.rs:31:21: 31:25 error: moving out of self reference
test.rs:31 let (a, _) = self;
^~~~
test.rs:35:21: 35:25 error: moving out of self reference
test.rs:35 let (_, b) = self;
^~~~
error: aborting due to 2 previous errors
How can I tell the compiler returning values lifetime? Actually it couldn't
be more than lifetime of self.
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