Std.HashMap.insert

fn

insert: &Std.HashMap.HashMap[K, V] -> K -> V -> Std.HashMap.HashMap[K, V] where K: Eq + Hash

This is a callable function.

A map with a pairing added, replacing any value already under the key.

Replacing keeps the position the key already had, so a value corrected

after the fact does not move to the end of what enumeration reports. A key

removed and put back is a new pairing and does take a new position.

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.