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Core Rejecterr

docs/data/core-rejecterr.md

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Original Source

The opposite of FilterErr. Returns the elements for which the predicate returns false. If the predicate returns an error, iteration stops immediately and returns the error.

go
odd, err := lo.RejectErr([]int{1, 2, 3, 4}, func(x int, index int) (bool, error) {
    if x == 3 {
        return false, errors.New("number 3 is not allowed")
    }
    return x%2 == 0, nil
})
// []int(nil), error("number 3 is not allowed")
go
odd, err := lo.RejectErr([]int{1, 2, 3, 4}, func(x int, index int) (bool, error) {
    return x%2 == 0, nil
})
// []int{1, 3}, nil