๋ณธ๋ฌธ ๋ฐ”๋กœ๊ฐ€๊ธฐ
TIL

20230407 TIL

by ๊น€๋นต๊ทธ 2023. 4. 7.

๐Ÿ™„Today ์š”์•ฝ

1. flutter ์ฑŒ๋ฆฐ์ง€๋กœ ์ธํ•œ ๋ฏธ์นœ ๋ณต์Šต๊ณผ ๊ตฌ๊ธ€๋ง. add(), remove(), get, map, list ๋“ฑ๋“ฑ ๊ธฐ์ดˆ์ ์ธ ์ง€์‹์— ๋Œ€ํ•ด ์ข€ ๋” ์•Œ๊ฒŒ ๋˜์—ˆ๋‹ค
2. List<type> ๋„ค์ž„ = []; Set<type> ๋„ค์ž„ = {} ; ๋Œ€๊ด„ํ˜ธ์™€ ์ค‘๊ด„ํ˜ธ ์ฐจ์ด๊ฐ€ ํฌ๋ฉฐ set์—์„œ๋Š” ์ค‘๋ณต์ด ๋ถˆ๊ฐ€๋Šฅํ•˜๋‹ค
3. map<key, value> ๋„ค์ž„ ={ํ‚ค : ๊ฐ’}; key๋ฅผ ์‚ฌ์šฉํ•˜์—ฌ value ๊ฐ’์„ ๊ฐ€์ ธ์˜ฌ ์ˆ˜ ์žˆ๋‹ค ์˜ˆ์‹œ_ final item = map["key"]

๐Ÿ‘1. ์ž˜ํ•œ ์ 

[โœ…] nomad Flutter ์ฑŒ๋ฆฐ์ง€ 

[โœ…] codingpapa dart 88~92

โœŒ๏ธ2. ๊ฐœ์„  ์ 

๐Ÿ‘‹3. ๋ฐฐ์šด ์ 

Dart List ์‚ญ์ œ 

void main() {
	List<String> list =[1,2,3,4,5];
    list.clear();
    print(list); //[]
}

Dart Set 

A.intersection(B) : ๊ต์ง‘ํ•ฉ
A.union(B) : ํ•ฉ์ง‘ํ•ฉ

 

 

Dart Set์— ๋Œ€ํ•ด ์•Œ์•„๋ณด์ž

Set void main() { List months = [ "๊ฐ€", "๋‚˜", "๋‹ค", "๊ฐ€", "๋‚˜", ]; Set setMonths = {}; for (var mon in months) { setMonths.add(mon); } print(setMonths); } list์™€ ๋น„์Šทํ•˜์ง€๋งŒ index๊ฐ€ ์—†๊ณ  {} ์ค‘๊ด„ํ˜ธ๋กœ ์Œ“์—ฌ์žˆ๋‹ค ๋™์ผํ•œ element๋ฅผ ๋ฐ˜๋ณต

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Dart Map

Map<Key, Value>={};

 

 

Dart Map์— ๋Œ€ํ•ด ์•Œ์•„๋ณด์ž

Maps Key๋ฅผ ํ†ตํ•ด value๋ฅผ ์ฐพ์„ ์ˆ˜ ์žˆ๋‹ค ์ˆœ์„œ๊ฐ€ ์—†๋‹ค key๋Š” ์œ ๋‹ˆํฌํ•ด์•ผํ•œ๋‹ค ์ค‘๋ณต x Map void main() { final food = { "์น˜ํ‚จ": 20000, "์ฝœ๋ผ": 2000, "์•„์ด์Šคํฌ๋ฆผ": 1000, }; final numOf = food['์น˜ํ‚จ']; print("$numOf"); //20000 } ๊ธฐ

252-archive.tistory.com

 

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