pub const MAP_ENTRY: BuiltinSchema;Expand description
MapEntry<K, V>: the one key/value pair a Map is built from and
iterated as.
It is the second builtin struct, and the only builtin whose initializer
is labelled: MapEntry(key: "a", value: 1) is the synthesized labelled
call a declared struct gets, and its labels are the two fields below, read
by both ends rather than written out at each. It is not a namespace,
because nothing is called on the name — Map.of collects the pairs and a
for over a Map binds them.