for ๋ฐ˜๋ณต๋ฌธ

for ๋ฐ˜๋ณต๋ฌธ์€ while let ๋ฐ˜๋ณต๋ฌธ๊ณผ ๋งค์šฐ ์œ ์‚ฌํ•ฉ๋‹ˆ๋‹ค. for ๋ฐ˜๋ณต๋ฌธ์€ ์ž๋™์œผ๋กœ into_iter()๋ฅผ ํ˜ธ์ถœํ•œ ๋‹ค์Œ ์ด๋ฅผ ๋ฐ˜๋ณตํ•ฉ๋‹ˆ๋‹ค:

fn main() {
    let v = vec![10, 20, 30];

    for x in v {
        println!("x: {x}");
    }
    
    for i in (0..10).step_by(2) {
        println!("i: {i}");
    }
}

๋‹ค๋ฅธ ์–ธ์–ด์™€ ๋งˆ์ฐฌ๊ฐ€์ง€๋กœ break ์™€ continue๋ฅผ ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.

  • ๋Ÿฌ์ŠคํŠธ๋Š” ์ธ๋ฑ์Šค ๊ธฐ๋ฐ˜์˜ ๋ฐ˜๋ณต์„ ์œ„ํ•œ ๋ณ„๋„์˜ ๋ฌธ๋ฒ•์„ ์‚ฌ์šฉํ•˜์ง€ ์•Š์Šต๋‹ˆ๋‹ค.
  • (0..10)์€ Iterator ํŠธ๋ ˆ์ž‡์„ ๊ตฌํ˜„ํ•˜๋Š” ๋ฒ”์œ„(range) ๊ฐ’์ž…๋‹ˆ๋‹ค.
  • step_by๋Š” ๋ฐ˜๋ณต์ž์˜ ์š”์†Œ๋“ค์„ ๊ฑด๋„ˆ๋›ฐ๋Š” ๋˜๋‹ค๋ฅธ Iterator๋ฅผ ๋ฐ˜ํ™˜ํ•˜๋Š” ๋ฉ”์„œ๋“œ์ž…๋‹ˆ๋‹ค.
  • ๋ฒกํ„ฐ ์š”์†Œ๋“ค์„ ์ˆ˜์ •ํ•˜๋ ค๊ณ  ํ•˜๋ฉด ๋‚˜์˜ค๋Š” ์ปดํŒŒ์ผ๋Ÿฌ ์—๋Ÿฌ๋ฅผ ๊ฐ™์ด ์‚ดํŽด๋ณด์„ธ์š”. v ๋ฒกํ„ฐ๋ฅผ ๊ฐ€๋ณ€ ๋ณ€์ˆ˜๋กœ ๋ณ€๊ฒฝํ•˜๊ณ  ๋ฃจํ”„๋Š” for x in v.iter_mut()๋กœ ์ˆ˜์ •ํ•˜์„ธ์š”.