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Rainbow๐ŸŒˆCoder

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TypeScript/ํƒ€์ž…์Šคํฌ๋ฆฝํŠธ TypeScript

[ํƒ€์ž…์Šคํฌ๋ฆฝํŠธ] ํ•จ์ˆ˜ํ˜ธ์ถœ ์‹œ๊ทธ๋‹ˆ์ฒ˜์˜ ์ œ๋„ค๋ฆญ

2022. 4. 21. 12:17
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function filter<T>(array: T[], f: (item: T) => boolean): T[] {
  let result = [];
  // tslint:disable-next-line: prefer-for-of
  for (let i = 0; i < array.length; i++) {
    let item = array[i];
    if (f(item)) {
      result.push(item);
    }
  }
  return result;
}
type Filter<T> = { (array: T[], f: (iter: T) => boolean): T[] };

let names = [{ ์ด๋ฆ„: "smith" }, { ์ด๋ฆ„: "kate" }, { ์ด๋ฆ„: "max" }];

//1. T๋Š” number๋กœ ํ•œ์ •๋จ
console.log(filter([1, 2, 3, 4, 5, 6, 7, 8, 9, 10], (_) => _ > 5)); //[ 6, 7, 8, 9, 10 ]

//2. T๋Š” string์œผ๋กœ ํ•œ์ •๋จ
console.log(filter(["a", "b", "ab", "b", "c"], (_) => _ !== "b")); //[ 'a', 'ab', 'c' ]

//3. T๋Š” {์ด๋ฆ„:string}์œผ๋กœ ํ•œ์ •๋จ
console.log(filter(names, (_) => _.์ด๋ฆ„.endsWith("h"))); //[ { '์ด๋ฆ„': 'smith' } ]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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    • [ํƒ€์ž…์Šคํฌ๋ฆฝํŠธ] ์ œ๋„ค๋ฆญ ํƒ€์ž… ๋ณ„์นญ
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    • [ํƒ€์ž…์Šคํฌ๋ฆฝํŠธ] ํ˜ธ์ถœ ์‹œ๊ทธ๋‹ˆ์ฒ˜(ํƒ€์ž…์‹œ๊ทธ๋‹ˆ์ฒ˜)๋ž€?
    • TS๋กœ ์ฝœ๋ฐฑ ํ•จ์ˆ˜, ์ค‘์ฒฉ ํ•จ์ˆ˜, ๊ณ ์ฐจ ํ•จ์ˆ˜ ๊ตฌํ˜„
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