In flutter what is the use “..” instead of “.”?


This Content is from Stack Overflow. Question asked by Geek

Gesture detection in Flutter TextSpan I found this code

import 'package:flutter/gestures.dart';

new RichText(
      text: new TextSpan(text: 'Non touchable. ', children: [
        new TextSpan(
          text: 'Tap here.',
          recognizer: new TapGestureRecognizer()..onTap = () => print('Tap Here onTap'),

Why here double dot “..” is used to access onTap and why It’s giving error when I use “.” (single dot).


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