Swift equivalent to each_slice

Question

Is there something similar to Ruby\'s Enumerable#each_slice in Swift?

Ruby example:

arr = [\"a\", \"b\", \"c\", \"d\"]
arr.each_slice(2) {|s1, s2| puts s         


        

Answer 1

Swift 4.1

extension Array {
    /*
     [1,2,3,4,5].forEachSlice(2, { print($0) })
     => [1, 2]
     => [3, 4]
     => [5]
    */
    public func forEachSlice(_ n: Int, _ body: (ArraySlice) throws -> Void) rethrows {
        assert(n > 0, "n require to be greater than 0")

        for from in stride(from: self.startIndex, to: self.endIndex, by: n) {
            let to = Swift.min(from + n, self.endIndex)
            try body(self[from..