swift example -- operational error

var x = 10
for index in 1 ... 20 {
    let y = index * x--
}

I'm studying using iPad Pro's Playground. I played the same chord as the example Unary operator '--' cannot be applied to operands of type '@lvalueInt'. That's what it says. Please let me know the solution.

swift-playground swift

2022-09-21 17:15

1 Answers

In Swift3, the -- operator and the ++ operator are missingYes, I think you copied the old example. We solved it using the -+ operator.

var x = 10
for index in 1 ... 20 {
    x -= 1
    let y = index * x
    print(y)
}

Press the [Do] button to press the next code.

Is it correct if it's printed out like this?

2022-09-21 17:15

If you have any answers or tips

Popular Tags

python x 4647

android x 1593

java x 1494

javascript x 1427

c x 927

c++ x 878

ruby-on-rails x 696

php x 692

python3 x 685

html x 656