KASH3 Ref - DryReplaceOrAdd

Replace `source' in `D' by `target'.
If `source' is in `D' it is removed and `target' is added such that the result stays a dry.
If `source' is not in `D' then `target' is added such that the result stays a dry.
Note: Technically this is nothing but
DryRemove_(D,source);
DryAdd_(D,target);
but it is more efficient since the dry is often not resized.

Function

Description

See also