itertools

itertools is a Go library introducing Iterator type to iterate over elements of collections/sequences with many methods similar to Rust or Python iterators.

Documentation

Documentation for the library packages and examples are available with GoDoc.

Installation

go get github.com/KSpaceer/itertools@latest

Example

data := []int{8, 1, 2, 3, 8, 7, 4, 5, 1, 6, 7, 8}

// finding max value in data
maxValue := itertools.Max(itertools.NewSliceIterator(data))

// transform number so it is in range [0, 1]
normalizeFunc := func(n int) float64 {
    return float64(n) / float64(maxValue)
}

// iterator for normalized values
normalizedIter := itertools.Map(
    itertools.NewSliceIterator(data),
    normalizeFunc,
)

// iterator for original slice
originalIter := itertools.NewSliceIterator(data)

// zipping normalized iterator with the original one to output values together
iter := itertools.Zip(originalIter, normalizedIter)

for iter.Next() {
    value, normalizedValue := iter.Elem().Unpack()
    fmt.Printf("original value: %d\tnormalized value: %.2f\n", value, normalizedValue)
}

Run with Playground.

See more examples in docs.