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Lamda 1

[JAVA] Lamda ํ‘œํ˜„์‹ ์˜ˆ์ œ

Lamda ํ‘œํ˜„์‹ ๋žŒ๋‹ค์‹์€ JAVA 8์— ๋„์ž…๋œ ํ•จ์ˆ˜(๋ฉ”์„œ๋“œ)๋ฅผ ๊ฐ„๋‹จํ•œ ์‹์œผ๋กœ ํ‘œํ˜„ํ•˜๋Š” ๋ฐฉ๋ฒ•์œผ๋กœ ์ต๋ช… ํ•จ์ˆ˜(anonymous function)๋ฅผ ์ƒ์„ฑํ•˜๊ธฐ ์œ„ํ•œ ์‹์ด๋‹ค. ๊ฐ์ฒด ์ง€ํ–ฅ ์–ธ์–ด๋ณด๋‹ค๋Š” ํ•จ์ˆ˜ ์ง€ํ–ฅ ์–ธ์–ด์— ๊ฐ€๊น๋‹ค. ํ•จ์ˆ˜ ๋ฉ”์„œ๋“œ ํด๋ž˜์Šค์— ๋…๋ฆฝ์  ํด๋ž˜์Šค์— ์ข…์†์  ์ผ๋ฐ˜์ ์ธ ์šฉ์–ด ๊ฐ์ฒด์ง€ํ–ฅ ๊ฐœ๋… ์šฉ์–ด Lamda์‹ ๊ธฐ๋ณธ ์ž‘์„ฑ ๋ฐฉ๋ฒ• (์ธ์ˆ˜) -> {์ฒ˜๋ฆฌ} ()-> {์ฒ˜๋ฆฌ} (์ธ์ˆ˜) -> ์ฒ˜๋ฆฌ (์ธ์ˆ˜) -> {return 0;} int max(int a, int b) { retrun a > b ? a : b; } ↓ ๋ฉ”์„œ๋“œ์˜ ์ด๋ฆ„๊ณผ ๋ฐ˜ํ™˜ ํƒ€์ž…์„ ์ œ๊ฑฐ ํ›„ ' -> ' ์ถ”๊ฐ€ (a, b) -> a > b ? a : b List์—์„œ Lamda์‚ฌ์šฉ Java 7 ์ดํ•˜ : for๋ฌธ ์‚ฌ์šฉ List list = ...service...

Spring 2021.08.27
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