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Answer by Md. Yeasin Sheikh for why do i get error of Undefined name even...

loadedPorduct is not available outside the if(productId!=null).Place this variable out of it, inside the build context.late final loadedProduct ; final productId =...

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Answer by Wiktor for why do i get error of Undefined name even when the...

Yes, you have your variable defined, but it is not visible in the place where you want to use it.In your first snippet: if (productId != null) { final loadedProduct =...

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Answer by Moaz El-sawaf for why do i get error of Undefined name even when...

The Second Snippet will not work because you are not handling the return if the productId is null, so you have to always return something at the build() method.For the First Snippet, the problem is...

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why do i get error of Undefined name even when the variable is defined?

I am getting an undefined name error even when i defined the var in my dart file,Below is the error imageBelow is my codeimport 'package:flutter/material.dart';import...

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