gotilty /
gotil
| Total Lines | 16 |
| Duplicated Lines | 0 % |
| Changes | 0 | ||
| 1 | package gotil |
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| 2 | |||
| 3 | // GroupBy iterates over elements of collection, returns an map object. |
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| 4 | // key is result of iterator method |
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| 5 | // value is list |
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| 6 | // result := gotil.GroupBy([]int{10, 20, 30}, func(v int, i int) int { |
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| 7 | // return v / 10 |
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| 8 | // }) |
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| 9 | // fmt.Println(result) |
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| 10 | // // Output: map[1:[10] 2:[20] 3:[30]] |
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| 11 | func GroupBy[T, K comparable](s []T, f func(v T, i int) K) map[K][]T { |
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| 12 | result := map[K][]T{} |
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| 13 | for i, v := range s { |
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| 14 | key := f(v, i) |
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| 15 | result[key] = append(result[key], v) |
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| 16 | } |
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| 17 | return result |
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| 19 |
