Std.Option.keepIf
1 declaration
fn
keepIf: Option[T] -> fn(T) -> Bool -> Option[T]This is a callable function.
What it does
The value if it is present and the predicate accepts it.
Read the signature
- The text after the name is the type checked by Pudu.
- Read arrows from left to right: inputs come first, and the final type is returned.
- Names inside [ ] are type arguments, such as the item type held by a collection.
- Option holds Some(value) or None when no value is available.