Is it possible to declare the type of the variable in Rust for loops?

Question

C++ example:

for (long i = 0; i < 101; i++) {     //... } 

In Rust I tried:

for i: i64 in 1..100 {     // ... } 

I could easily just declare a let i: i64 = var before the for loop but I'd rather learn the correct way to doing this, but this resulted in

error: expected one of `@` or `in`, found `:`  --> src/main.rs:2:10   | 2 |     for i: i64 in 1..100 {   |          ^ expected one of `@` or `in` here 

Answer 1

You can use an integer suffix on one of the literals you've used in the range. Type inference will do the rest:

for i in 1i64..101 {     println!("{}", i); }