Question about String.Index

Question

c00012 OP

Created Nov ’22

Replies 1

Boosts 0

Participants 2

Hello,

I wrote a code to get second character of the string as follows:




print("name:")

let name = readLine()!



print("Age:")

let age = Int(readLine()!)!



print("Name:\(name), Age:\(age)")



let idx = name.index(name.startIndex, offsetBy: 1)

print(name[idx])

print(idx)

I entered these to test this code;

name: John

age:20

I expected result: name:John

age:20 o

1

but I got:

name:John

age:20

o

Index(_rawBits: 65799)//I expected 1

If someone can explain why I can't get index number of the string, I'd be very appreciated.

thanks for your answer in advance.

c00012

Boost

Answer 1

Claude31 OP

Nov ’22

Index is not an Int.

You need to get the Int position from the index, for instance with this:

let index: Int = name.distance(from: name.startIndex, to: idx)
print(index)

But in your case, you have offset by 1 from start, that is the Int you look for.

0