Swift - sum range.location and range.length

Question

I have following Obj-c statement:

string = [string substringFromIndex:(range.location + range.length)];

What it's Swift equivalent?

Couldn't you just have looked this up? This doesn't seem like a hard conversion at all... — Benjamin Lowry, Feb 02 '17 at 12:56
Check this link for detail - [click here](http://stackoverflow.com/questions/39677330/how-does-string-substring-work-in-swift-3) — Prema Janoti, Feb 02 '17 at 13:10
@BenjaminLowry, Having multiple range types in Swift, and no Xcode help, it is a hard conversion! — Iulian Onofrei, Nov 30 '17 at 13:41

score 0 · Accepted Answer · edited May 23 '17 at 12:33

0

You should use substring(from:):

var string = "Hello World"

string = string.substring(from: string.index(string.startIndex, offsetBy: 6))

print(string) // "World"

Also, you might want to use substring(to:):

let hello = string.substring(to: string.index(string.startIndex, offsetBy: 5))

print(hello) // "Hello"

For more information about String.Index, check this question/answer.

edited May 23 '17 at 12:33

Community

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answered Feb 02 '17 at 13:03

Ahmad F

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So the answer is "replace `range.length` with `6`"? – Iulian Onofrei Nov 30 '17 at 13:42

score 0 · Answer 2 · answered Feb 02 '17 at 13:06

If you do not want to use substring:

let string = "abcdefghijklm"
let startPoint = 2
let length = 5

let startIndex = string.index(string.startIndex, offsetBy: startPoint)
let endIndex = string.index(startIndex, offsetBy: length)

let result = string[startIndex ..< endIndex]
print(result)         // cdefg

Swift - sum range.location and range.length

2 Answers2