Std.Map.mergeWith
1 declaration
fn
mergeWith: &Map[K, V] -> &Map[K, V] -> fn(V, V) -> V -> Map[K, V]This is a callable function.
What it does
Two maps combined, with a caller-supplied rule for keys in both.
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.
- & borrows a value for this call instead of moving or copying it.
- Names inside [ ] are type arguments, such as the item type held by a collection.