Dart how to match and then replace a regexp

Question

This may be a silly question, but I can't find any reference on how to replace a text after being matched by a regexp using Dart's RegExp.

Basically what I'm trying to do is like this: I have a text like this

'{name : aName, hobby : [fishing, playing_guitar]}' 

I want to match the string using this pattern \b\w+\b, then replace using "$&". I expect the output to be like:

'{"name" : "aName", "hobby" : ["fishing", "playing_guitar"]}' 

So later I can use dart:json's parse to turn that to a Map.

Maybe I missed something. Does anyone know how I can achieve this replacement?

Answer 1

You have to use String.replaceAllMapped.

final string = '{name : aName, hobby : [fishing, playing_guitar]}'; final newString = string.replaceAllMapped(RegExp(r'\b\w+\b'), (match) {   return '"${match.group(0)}"'; }); print(newString); 

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