Late variable problem & instance member 'user' can't be accessed in an initializer

[Alvaro Gonzalez Rico]

Hello! I have been trying to answer a message on the discussion called "Instance member 'user' can't be accessed in an initializer", but my response keeps getting deleted. Do you know why that happens?

Regarding the problem, when I use the example from the website you gave me, I get an error message for late that says "Unexpected text 'late'. Try removing the text." I do not understand why I cannot use (it gives me errors) the late variable in my code or in this mock example. 

[Jack Sun]

try 

'''

environment: 

    sdk: ">=2.12.0 <3.0.0"

'''

in your pubspec.yaml

On Thu, May 20, 2021 at 11:01 AM Alvaro Gonzalez Rico <ajgonza...@gmail.com> wrote:

Hello! I have been trying to answer a message on the discussion called "Instance member 'user' can't be accessed in an initializer", but my response keeps getting deleted. Do you know why that happens?

Regarding the problem, when I use the example from the website you gave me, I get an error message for late that says "Unexpected text 'late'. Try removing the text." I do not understand why I cannot use (it gives me errors) the late variable in my code or in this mock example. 

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[Alvaro Gonzalez Rico]

Hello! Thanks. I currenly have "environment: sdk: ">=2.7.0 <3.0.0"" . How would changing to that environment solve the issue?

[Jack Sun]

Dart 2.12 added the late modifier.

https://dart.dev/guides/language/language-tour#late-variables

https://dart.dev/null-safety/understanding-null-safety

To view this discussion on the web visit https://groups.google.com/d/msgid/flutter-dev/71434952-b77c-4c47-93a5-8b85d1af0005n%40googlegroups.com.

[Alvaro Gonzalez Rico]

Hello! So just to double check: in order for me to use late I have to migrate my whole code to null safety? If so, is there another way to solve my issue by using something that is not late? Also, do you think it is worthwhile to migrate to null safety? Thanks