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authorYoichi Hirai <i@yoichihirai.com>2016-11-21 19:47:40 +0800
committerYoichi Hirai <i@yoichihirai.com>2016-11-21 19:47:40 +0800
commitb24f4a4d006b69d976b173e058efcbe44387404b (patch)
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docs: some types cannot be the key type for mappings
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@@ -729,9 +729,9 @@ assigning it to a local variable, as in
Mappings
========
-Mapping types are declared as ``mapping _KeyType => _ValueType``, where
-``_KeyType`` can be almost any type except for a mapping and ``_ValueType``
-can actually be any type, including mappings.
+Mapping types are declared as ``mapping _KeyType => _ValueType``.
+Here ``_KeyType`` can be almost any type except for a mapping, a dynamically sized array, a contract, an enum and a struct.
+``_ValueType`` can actually be any type, including mappings.
Mappings can be seen as hashtables which are virtually initialized such that
every possible key exists and is mapped to a value whose byte-representation is