mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-24 07:44:10 +00:00
48 lines
2.0 KiB
Plaintext
48 lines
2.0 KiB
Plaintext
error[E0277]: a value of type `i32` cannot be made by summing an iterator over elements of type `&()`
|
|
--> $DIR/sum.rs:4:31
|
|
|
|
|
LL | vec![(), ()].iter().sum::<i32>();
|
|
| --- ^^^ value of type `i32` cannot be made by summing a `std::iter::Iterator<Item=&()>`
|
|
| |
|
|
| required by a bound introduced by this call
|
|
|
|
|
= help: the trait `Sum<&()>` is not implemented for `i32`
|
|
= help: the following other types implement trait `Sum<A>`:
|
|
<i32 as Sum<&'a i32>>
|
|
<i32 as Sum>
|
|
note: the method call chain might not have had the expected associated types
|
|
--> $DIR/sum.rs:4:18
|
|
|
|
|
LL | vec![(), ()].iter().sum::<i32>();
|
|
| ------------ ^^^^^^ `Iterator::Item` is `&()` here
|
|
| |
|
|
| this expression has type `Vec<()>`
|
|
note: required by a bound in `std::iter::Iterator::sum`
|
|
--> $SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL
|
|
|
|
error[E0277]: a value of type `i32` cannot be made by multiplying all elements of type `&()` from an iterator
|
|
--> $DIR/sum.rs:7:35
|
|
|
|
|
LL | vec![(), ()].iter().product::<i32>();
|
|
| ------- ^^^ value of type `i32` cannot be made by multiplying all elements from a `std::iter::Iterator<Item=&()>`
|
|
| |
|
|
| required by a bound introduced by this call
|
|
|
|
|
= help: the trait `Product<&()>` is not implemented for `i32`
|
|
= help: the following other types implement trait `Product<A>`:
|
|
<i32 as Product<&'a i32>>
|
|
<i32 as Product>
|
|
note: the method call chain might not have had the expected associated types
|
|
--> $DIR/sum.rs:7:18
|
|
|
|
|
LL | vec![(), ()].iter().product::<i32>();
|
|
| ------------ ^^^^^^ `Iterator::Item` is `&()` here
|
|
| |
|
|
| this expression has type `Vec<()>`
|
|
note: required by a bound in `std::iter::Iterator::product`
|
|
--> $SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL
|
|
|
|
error: aborting due to 2 previous errors
|
|
|
|
For more information about this error, try `rustc --explain E0277`.
|