I'm relatively new to this and I am having and small issue in where to place the return in my scopes and basically figuring out the proper syntax for this.
func isPassingGrade(for scores: [Int]) -> Bool {
var total = 0
for score in scores {
total += score
if total >= 500 {
return true
}else {
return false
}
}
}
func isPassingGrade(for scores: [Int]) -> Bool {
var total = 0
for score in scores {
total += score
}
return total >= 500
}
In addition, if you want to return as soon as you have check that total is over 500, you can:
func isPassingGrade(for scores: [Int]) -> Bool {
var total = 0
for score in scores {
total += score
if total >= 500 { return true } // <<-- Add this
}
return total >= 500 // Then this will always return false
}
Or if you want to skip ahead to more advanced Swift usage (without the early return optimization), consider this:
func isPassingGrade(for scores: [Int]) -> Bool {
scores.reduce(0, +) >= 500
}
There’s no explicit sum() function in the Swift library but this reduce() expression is equivalent. And reduce() is well worth getting familiar with.