creates a new ps_map that maps all the keys that exist either in ps_map.this or in other to the values they are mapped to. In case a key k exists in both ps_map.this and other, it will be mapped to ps_map.this[k] or to other[k], but it is undefined to which of these two.
0.094dev (2025-07-10 15:41:47 GIT hash eafa42ae743de61b62f958948d7abb5fada7756f built by fridi@fzen)
creates a new ps_map that maps all the keys that exist either in ps_map.this
or in other to the values they are mapped to. In case a key k exists in
both ps_map.this and other, it will be mapped to ps_map.this[k] or to other[k],
but it is undefined to which of these two.