Module merge

Built-in merge functions.

Functions

append_vec

Append the items from the next vector to the end of the previous vector.

discard

Discard both previous and next values and return None.

merge_btreemap

Shallow merge the next BTreeMap into the previous BTreeMap. Any items in the next BTreeMap will overwrite items in the previous BTreeMap of the same key.

merge_btreeset

Shallow merge the next BTreeSet into the previous BTreeSet, overwriting duplicates.

merge_hashmap

Shallow merge the next HashMap into the previous HashMap. Any items in the next HashMap will overwrite items in the previous HashMap of the same key.

merge_hashset

Shallow merge the next HashSet into the previous HashSet, overwriting duplicates.

prepend_vec

Prepend the items from the next vector to the start of the previous vector.

preserve

Always preserve the previous value over the next value.

replace

Always replace the previous value with the next value.