how to get all the headings in a array?

Question

I have the following array

["<h1>Test</h1><h2>Test2</h2>", "<h3>Hello, playground</h3>Testing", "<h3>Test</h3>", "<h2>Main Takeaway</h2>"]

I want to get all the values between <h3> and </h3> as well as <h2> and </h2>. So I want to create an array with the following values

Hello, playground,
Test
Main Takeaway

How do I do that?

What if you have h2 and h3 on the same index? In the result, should it be two values, or one? — Larme, Nov 24 '20 at 16:00
There will never be an h2 and h3 in an entry. There will either be one h2 or one h3 — Chris Hansen, Nov 24 '20 at 16:01
I tried using the .components function, but that didn't work. — Chris Hansen, Nov 24 '20 at 16:06
Possible duplicate of https://stackoverflow.com/q/31080818/1974224 — Cristik, Nov 24 '20 at 18:44
No its not a duplicate. You should read the question more carefully. — Chris Hansen, Nov 24 '20 at 21:31

score 1 · Accepted Answer · answered Nov 24 '20 at 16:31

1

Use a regular expression to find and replace the values within the h2/h3 tags

let array = ["<h1>Test</h1><h2>Test2</h2>", "<h3>Hello, playground</h3>Testing", "<h3>Test</h3>", "<h2>Main Takeaway</h2>"]

let values = array.map { $0.replacingOccurrences(of: #".*(<h2>|<h3>)(.*)(</h2>|</h3>).*"#, with: "$2", options: .regularExpression) }

answered Nov 24 '20 at 16:31

Joakim Danielson

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This will return the whole string if there are no `h2/h3` tags, maybe an empty string would've been a better candidate. Also, in case there are multiple tags within the same string, then this will match only one of them. Another corner case is with strings like `
text`, the regex will match these invalid combinations too.
– Cristik Jun 12 '21 at 12:18

how to get all the headings in a array?

1 Answers1

text`, the regex will match these invalid combinations too.