Here c.Position.x
is null
. In Dart calling a method (or an operator -
in your case) on null
leads to a NoSuchMethodError
.
Getting a NoSuchMethodError in Dart
-
05-03-2022 - |
Question
I'm pretty new to Dart, and I'm used to working with C# (and XNA usually), so Dart is a little different, and I'm not sure why this error is happening.
double left = c.Position.x - (canvasDimensions.x * 0.5);
the Position and canvasDimensions are a type I created, called Vector2, which basically contains 2 numbers, x and y, I am getting the error
NoSuchMethodError : method not found: '-'
Receiver: null
Arguments: [600.0]
on the line shown, since I am not familiar with the language I am not sure why this is happening, please help, thanks!
Solution
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