34 lines
798 B
Go
34 lines
798 B
Go
package moslice
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// Map returns a new slice containing the elements of ts transformed by the passed in function.
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func Map[T, U any](ts []T, fn func(t T) U) (us []U) {
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if ts == nil {
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return nil
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}
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us = make([]U, len(ts))
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for i, t := range ts {
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us[i] = fn(t)
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}
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return us
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}
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// Map returns a new slice containing the elements of ts transformed by the passed in function, which
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// can either either a mapped value of U, or an error. If the mapping function returns an error, MapWithError
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// will return nil and the returned error.
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func MapWithError[T, U any](ts []T, fn func(t T) (U, error)) (us []U, err error) {
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if ts == nil {
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return nil, nil
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}
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us = make([]U, len(ts))
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for i, t := range ts {
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var e error
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us[i], e = fn(t)
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if e != nil {
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return nil, e
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}
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}
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return us, nil
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}
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