Anyone know the difference between `val a: String?...

# android

[tevjef]

Anyone know the difference between val a: String? = b as String? and val a: String? = b as? String

[Edgars]

b as? String returns null if it cannot be cast to String, if I'm not mistaken.

[Egor Trutenko]

@Edgars right, the former will throw exception if b is not String?

[itnoles]

b as String = unsafe operator. It can be null.