takeIf
Returns this value when predicate is true, or null otherwise.
The predicate receives the original value, including null, and runs once. Its exceptions propagate and the inline predicate supports non-local returns. A null result can mean either rejection or acceptance of a null receiver.
val positive = 5.takeIf { it > 0 }Content copied to clipboard
Receiver
value to test.
Return
the original receiver when accepted, or null when rejected.
Parameters
predicate
test that returns true to retain the value.
Type Parameters
T
type of the receiver, which may be nullable.