Master the fundamantals of Dart before jumping into Flutter.
Gert started with Dart in 100 Seconds
This repo is a refrence for the videos in the course.
Master the Basics of the Dart Language
Master the fundamantals of Dart before jumping into Flutter.
Gert started with Dart in 100 Seconds
This repo is a refrence for the videos in the course.
This code throws the error:
var number = 23 as String; // throws "type 'int' is not a subtype of type 'String' in type cast" error
number is String; // true
I only tested in dart 2.18 and 2.17, and the error is the same in both.
This code fails when run in VScode as well as with the official Dart 2.14 and 2.18 docker images (the only ones I tried).
Specifically, this block throws the error:
var paint = Paint() // Throws "NoSuchMethodError: The method 'call' was called on null."
..color = 'black'
..strokeCap = 'round'
..strokeWidth = 5.0;
Repro with official dart docker image:
docker run -i dart:2.14 bash -c 'curl -fsLO https://raw.githubusercontent.com/fireship-io/dart-course/main/bin/operators.dart && dart operators.dart'
Unhandled exception:
NoSuchMethodError: The method 'call' was called on null.
Receiver: null
Tried calling: call()
#0 Object.noSuchMethod (dart:core-patch/object_patch.dart:63:5)
#1 main (file:///root/operators.dart:32:20)
#2 _delayEntrypointInvocation.<anonymous closure> (dart:isolate-patch/isolate_patch.dart:283:19)
#3 _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:184:12)
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