Regular expression for multiple matches between curly brackets

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The server is sending a string that will have the key inside it. one string can have multiple key. I need to write a regular expression to extract the key. For example, if string coming from the server is

"{{call_started}} at 6.50 but the user was not available. {{
user_name}} must be offline. "

Here we have two key: call_started and user_name

in the incoming string, all key will start with {{ and end with }}.

How to write the regular expression for this.

swift regex
1 Answers

Use below regex:

\{\{(.*?)\}\}

By using above, Mactch 1 Group 1 will have call_started and Match 2 Group 1 will have user_name

This will match all the occurrences of {{ }}

See usage and explanation here https://regex101.com/r/CESeIy/1

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