gunc is a collection of functional programming and array programming utilities for Go slices.

No dependencies, just the standard library and generics!

No more for loops for simple range number slices

s1 := gunc.Range(-3, 3) // [-3, -2, -1, 0, 1, 2, 3]
s2 := gunc.RangeWithStep(0, 1, 0.2) // [0.0, 0.2, 0.4, 0.6, 0.8, 1.0]

The classics: apply, filter, reduce

// Also check out gunc.ApplyInPlace()!
s1 = gunc.Apply(s1, func(e int) int { return e + 3 }) // [0, 1, 2, 3, 4, 5, 6]
s1 = gunc.Filter(s1, func(e int) bool { return e%3 == 0 }) // [0, 3, 6]
res := gunc.Reduce(s1, func(a, b int) int { return a + b }) // 9

Want the functions to use indexes also? ApplyWithIndex(), FilterWithIndex() and ReduceWithIndex() got you covered. Wanna keep Reduce()'s elements? Scan() is here from APL land.

Do what you want with this, to be fancy I chose the 0BSD license.