nullfold
Syntax-sugar for a lambda folds a nullable receiver type into type Out.
Looks dumb, but weirdly useful in the right context.
val result: String? = null
// Before:
result?.length ?: 0
// Before:
when (result) {
null -> 0
else -> result.length
}
// After:
result.nullfold(none = { 0 }, some = { it.length })Content copied to clipboard
Return
Parameters
In
The type of the receiver.
Out
The type of the return value.
none
The lambda to call if the receiver is null.
some
The lambda to call if the receiver is not null.