[Feature request]safe cast

[shinriyo]

I want to cast easyly.

because it is too long.
List<int> hoge = map['hoge']?.cast<int>() ?? [];

I want to do this.

List<int> hoge = map['hoge'].safecast<int>();

[simc]

I'm not sure whether this is something many users would find useful. Is there a language which has a similar method?

There are many examples where we could add a "safe" method but I don't think cluttering the auto complete is worth it.

Example:

5.safeAdd(7)       // -> 13
null.safeAdd(7)    // -> 7

[passsy]

I've constantly ran into similar problems when parsing json responses, that's why I created the deep_pick package.

Your code would become:

List<int>? hoge = pick(map, 'hoge').asListOrNull();
List<int> hoge = pick(map, 'hoge').asListOrEmpty();

[shinriyo]

@passsy Thank you. I will be considering use it