Is this a bug? Why is it passing through the != null check eventhough it is null?

# android

[Aaron Waller]

Is this a bug? Why is it passing through the != null check eventhough it is null?

[Tim Oltjenbruns]

Is it null or is it "null" ?

[Aaron Waller]

Oh yeah, it is “null” because I have to convert the Uri to a String:
And because the Uri is nullable it is converting the null to a “null”…

return UserState(
    username = responseUser.username,
    profileImageUrl = auth.currentUser?.photoUrl.toString(),
    isLoggedIn = true, 
    coins = 10
)

[Aaron Waller]

Whats the cleanest/shortest way to check if the Uri is null? profileImageUrl is a nullable String and should be null if the Uri is

[Tim Oltjenbruns]

auth.currentUser?.photoUrl.toString() -> auth.currentUser?.photoUrl?.toString()

[Tim Oltjenbruns]

toString works on Any? which converts null to “null”

[Tim Oltjenbruns]

but if you prefix it with ?.toString, it preserves the null and doesn’t convert it to string

[Aaron Waller]

Oh good to know, thank you