Returning a raw value from an Array in Swift (rather than an ArraySlice)-CodePudding

I'm trying to do something that should be very simple. I have an array of Dates and from this I simply want to extract a Date from a given index.

In Python I could do something like this: print(type(myArray[i] and it would come back with some kind of Date type.

However when I grab a value from my array in Swift it won't accept it as a Date input for my next function because its type is ArraySlice.

My question is simply this - how can I 'unwrap' my ArraySlice and actually get the Date object inside?

var cycleStartsArr: Array<Date> = Array()

// Some code that puts dates into the array

  var gaps: Array<Int> = Array() // Will contain list of the gaps in days
   
    for i in [1..<cycleStartsArr.count] {
        let startDate = cycleStartsArr[i]
        let endDate = cycleStartsArr[i-1]
        let gap = Calendar.current.dateComponents([.day], from: startDate.day!, to:endDate.day! // Throws Cannot convert value of type 'ArraySlice<Date>' to expected argument type 'Date'.
        gaps.append(gap)
    }

CodePudding user response：

[1..<cycleStartsArr.count]

is an array OF rangeS.

You meant

cycleStartsArr.indices.dropFirst()

Or better yet,

import Algorithms

for (endDate, startDate) in cycleStartsArr.adjacentPairs() {