Swift-style-guide: ํ•œ ์ค„ if-else ๋ฌธ

์— ๋งŒ๋“  2016๋…„ 05์›” 28์ผ  ยท  3์ฝ”๋ฉ˜ํŠธ  ยท  ์ถœ์ฒ˜: raywenderlich/swift-style-guide

๊ฐ€์ด๋“œ์—์„œ ์–ธ๊ธ‰๋œ ๊ฒƒ์„ ์ฐพ์ง€ ๋ชปํ–ˆ๊ธฐ ๋•Œ๋ฌธ์— one liner if ๋ฌธ์— ๋Œ€ํ•ด ์งˆ๋ฌธ์ด ์žˆ์Šต๋‹ˆ๋‹ค. ๋‹ค์Œ๊ณผ ๊ฐ™์€ ๊ฒƒ์„ ์‚ฌ์šฉํ•ด๋„ ๊ดœ์ฐฎ์Šต๋‹ˆ๊นŒ?

var playerMark = player == 1 ? "x" : "o"

๊ฐ์‚ฌ ํ•ด์š”!

๊ฐ€์žฅ ์œ ์šฉํ•œ ๋Œ“๊ธ€

๋‚˜๋Š” ๋ชจ๋“  ์‚ผํ•ญ ์—ฐ์‚ฐ์ž๋ฅผ ์•ˆ์— ๋„ฃ๋Š” ๊ฒƒ์„ ์„ ํ˜ธํ•ฉ๋‹ˆ๋‹ค(...). ๊ทธ๊ฒƒ์€ ๋‚˜๋ฅผ ์œ„ํ•ด ํ›จ์”ฌ ๋” ์ฝ๊ธฐ ์‰ฝ์Šต๋‹ˆ๋‹ค.

let playerMark = ( player == 1 ? "x" : "o" )      // lets var be let

๋ชจ๋“  3 ๋Œ“๊ธ€

๊ฐœ์ธ์ ์œผ๋กœ ํŒฌ์ž…๋‹ˆ๋‹ค. ๋‚˜๋Š” ์ค‘์ฒฉ ๋œ ์‚ผ์› ๋ผ์ด๋„ˆ์˜ ํŒฌ์ด ์กฐ๊ธˆ ์ ์Šต๋‹ˆ๋‹ค. BTW, ๋‚˜๋Š” ๊ทธ๊ฒƒ์ด let ์ด์–ด์•ผ ํ•œ๋‹ค๊ณ  ์ƒ๊ฐํ•ฉ๋‹ˆ๋‹ค :)

๋‚˜๋Š” ๋ชจ๋“  ์‚ผํ•ญ ์—ฐ์‚ฐ์ž๋ฅผ ์•ˆ์— ๋„ฃ๋Š” ๊ฒƒ์„ ์„ ํ˜ธํ•ฉ๋‹ˆ๋‹ค(...). ๊ทธ๊ฒƒ์€ ๋‚˜๋ฅผ ์œ„ํ•ด ํ›จ์”ฌ ๋” ์ฝ๊ธฐ ์‰ฝ์Šต๋‹ˆ๋‹ค.

let playerMark = ( player == 1 ? "x" : "o" )      // lets var be let

์ด๊ฒƒ์„ ์‚ฌ์šฉํ•˜๋Š” ๊ฒฝ์šฐ๊ฐ€ ๋‚˜์œ ๊ฒฝ์šฐ๋Š” ์—†์Šต๋‹ˆ๋‹ค.
๋‚ด๊ฐ€ ๊ธฐ์—ฌํ•œ ๋ฆฌํฌ์ง€ํ† ๋ฆฌ์—์„œ ์ด ์ฝ”๋“œ๋ฅผ ๋ฐœ๊ฒฌํ•˜๊ณ  ๋‹ค์Œ์„ ์ฐพ์•˜์Šต๋‹ˆ๋‹ค.

hostNameLabel.text = host.name == nil || (host.name!.isEmpty) ? "DetailsDetails.NoName".localized : host.name

์ด๊ฒƒ๋ณด๋‹ค ํ›จ์”ฌ ๋œ ์ฝ๊ธฐ

if host.name == nil || host.name!.isEmpty {
  "DetailsDetails.NoName".localized
} else {
  host.name
}
์ด ํŽ˜์ด์ง€๊ฐ€ ๋„์›€์ด ๋˜์—ˆ๋‚˜์š”?
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