[New rule] unnessecary-late-keyword

[DetachHead]

Rule details

report an error if a late variable is initialized on the same line, as the late keyword is not required.

What type of rule is this?

Warns about a potential problem

Example code

late bool foo = false; // error
late bool bar; // no error

Participation

• I am willing to submit a pull request to implement this rule.

Additional comments

i raised this before #1113 but i worded it terribly. sorry!

[incendial]

@DetachHead the thing with late is that it produces a lazy computed variable and the value will be calculated only on the first usage. I'm not sure that we're able to distinguish when late is used on purpose or not. Maybe you can add more examples?

[incendial]

So I can understand when this functionality is part of avoid-late-keword, but as a separate rule - it will create false-positives

[DetachHead]

the thing with late is that it produces a lazy computed variable and the value will be calculated only on the first usage. I'm not sure that we're able to distinguish when late is used on purpose or not. Maybe you can add more examples?

ah, I didn't know it worked like that. i'll close this issue then. sorry again for wasting your time with #1113

[incendial]

No problem, #1113 looks fine