Closed
Description
having the following code
fn main() {
const iter: i32 = 5;
for i in 0..10 {
println!("{}", i);
}
}produces the following error:
src/main.rs:4:5: 6:6 error: type mismatch resolving ` as core::iter::IntoIterator>::IntoIter == i32`:
expected struct `core::ops::Range`,
found i32 [E0271]
src/main.rs:4 for i in 0..10 {
src/main.rs:5 println!("{}", i);
src/main.rs:6 }
note: in expansion of for loop expansion
src/main.rs:4:5: 6:6 note: expansion site
src/main.rs:4:5: 6:6 help: run `rustc --explain E0271` to see a detailed explanation
src/main.rs:4:5: 6:6 error: the trait `core::iter::Iterator` is not implemented for the type `i32` [E0277]
src/main.rs:4 for i in 0..10 {
src/main.rs:5 println!("{}", i);
src/main.rs:6 }
note: in expansion of for loop expansion
src/main.rs:4:5: 6:6 note: expansion site
src/main.rs:4:5: 6:6 help: run `rustc --explain E0277` to see a detailed explanation
src/main.rs:4:5: 6:6 note: `i32` is not an iterator; maybe try calling `.iter()` or a similar method
src/main.rs:4 for i in 0..10 {
src/main.rs:5 println!("{}", i);
src/main.rs:6 }
note: in expansion of for loop expansion
src/main.rs:4:5: 6:6 note: expansion site
src/main.rs:4:5: 6:6 error: the trait `core::iter::Iterator` is not implemented for the type `i32` [E0277]
src/main.rs:4 for i in 0..10 {
src/main.rs:5 println!("{}", i);
src/main.rs:6 }
note: in expansion of for loop expansion
src/main.rs:4:5: 6:6 note: expansion site
src/main.rs:4:5: 6:6 help: run `rustc --explain E0277` to see a detailed explanation
src/main.rs:4:5: 6:6 note: `i32` is not an iterator; maybe try calling `.iter()` or a similar method
src/main.rs:4 for i in 0..10 {
src/main.rs:5 println!("{}", i);
src/main.rs:6 }
note: in expansion of for loop expansion
src/main.rs:4:5: 6:6 note: expansion site
error: aborting due to 3 previous errorsSomehow defining the const 'iter' doesn't let rust build the iterator needed by the for-loop. I know, that renaming the const fixes this issue, but can someone explain this behavior to be, please?
Kind Regards,
BH16