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Range expressions - The Rust Reference

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The .. and ..= operators will construct an object of one of the std::ops::Range (or core::ops::Range) variants, according to the following table:

Examples:

#![allow(unused)]
fn main() {
1..2;   // std::ops::Range
3..;    // std::ops::RangeFrom
..4;    // std::ops::RangeTo
..;     // std::ops::RangeFull
5..=6;  // std::ops::RangeInclusive
..=7;   // std::ops::RangeToInclusive
}

The following expressions are equivalent.

#![allow(unused)]
fn main() {
let x = std::ops::Range {start: 0, end: 10};
let y = 0..10;

assert_eq!(x, y);
}

Ranges can be used in for loops:

#![allow(unused)]
fn main() {
for i in 1..11 {
    println!("{}", i);
}
}

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