diff options
Diffstat (limited to 'system/doc/reference_manual/typespec.xml')
| -rw-r--r-- | system/doc/reference_manual/typespec.xml | 18 |
1 files changed, 6 insertions, 12 deletions
diff --git a/system/doc/reference_manual/typespec.xml b/system/doc/reference_manual/typespec.xml index 9e26e9058d..f17e5df277 100644 --- a/system/doc/reference_manual/typespec.xml +++ b/system/doc/reference_manual/typespec.xml @@ -142,7 +142,7 @@ PairList :: Pair | Pair, PairList - Pair :: Type := Type %% notes a pair that must be present + Pair :: Type := Type %% denotes a pair that must be present | Type => Type TList :: Type @@ -174,19 +174,13 @@ </p> <p> The general form of maps is <c>#{PairList}</c>. The key types in - <c>PairList</c> are allowed to overlap, and if they do, the leftmost pair - takes precedence. A map value does not belong to this type if contains a key - that is not in <c>PairList</c>. + <c>PairList</c> are allowed to overlap, and if they do, the + leftmost pair takes precedence. A map pair has a key in + <c>PairList</c> if it belongs to this type. </p> <p> - Because it is common to end a map type with <c>any() => any()</c> to denote - that keys that do not belong to any other pair in <c>PairList</c> are - allowed, and may map to any value, the shorthand notation <c>...</c> is - allowed as the last pair of a map type. - </p> - <p> - Notice that the syntactic representation of <c>map()</c> is <c>#{...}</c> - (or <c>#{_ => _}</c>, or <c>#{any() => any()}</c>), not <c>#{}</c>. + Notice that the syntactic representation of <c>map()</c> is + <c>#{any() => any()}</c> (or <c>#{_ => _}</c>), not <c>#{}</c>. The notation <c>#{}</c> specifies the singleton type for the empty map. </p> <p> |