Swift - Finding words in string and adding to array

Question

I'm looking for a way to loop through a string and pull out words into an array where a certain prefix and suffix is contained.

For example, lets take the following string;

let str = "A Lorem @!ipsum!@ dolor sit amet, @!consectetur!@ adipiscing elit"

I need a way to search the text and output both the words ipsum and consectetur into an array to be used within another function later on.

i think answer for you question → stackoverflow.com/a/26270721/3485139 — Maxim Zakopaylov
– Maxim Zakopaylov, Commented Nov 9, 2016 at 11:34

zoul · Accepted Answer · 2016-11-09 11:35:07Z

2

How about this?

let input = "A Lorem @!ipsum!@ dolor sit amet, @!consectetur!@ adipiscing elit."
let words = input.components(separatedBy: CharacterSet.whitespacesAndNewlines)
let interesting = words.filter { $0.hasPrefix("@!") }

answered Nov 9, 2016 at 11:35

zoul

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2 Comments

ScoopMatt Over a year ago

thanks for the input, this return the following 'use of unresolved indentifier 'CharacterSet'

zoul Over a year ago

That’s Swift 3. Update your Xcode or try to replace it with NSCharacterSet.

vadian · Accepted Answer · 2016-11-09 11:55:02Z

0

Use regular expression:

let text = "A Lorem @!ipsum!@ dolor sit amet, @!consectetur!@ adipiscing elit."
let pattern = "@!(\\w+)!@"
let regex = try! NSRegularExpression(pattern: pattern, options: [])
let matches = regex.matches(in: text, options: [], range: NSRange(location: 0, length: text.characters.count))
let array = matches.map({(text as NSString).substring(with: $0.rangeAt(1))})
print(array)

answered Nov 9, 2016 at 11:55

vadian

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