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-rw-r--r--Doc/lib/libstdtypes.tex2
1 files changed, 1 insertions, 1 deletions
diff --git a/Doc/lib/libstdtypes.tex b/Doc/lib/libstdtypes.tex
index 012e59b..a9ea55e 100644
--- a/Doc/lib/libstdtypes.tex
+++ b/Doc/lib/libstdtypes.tex
@@ -1224,7 +1224,7 @@ Notes:
\label{types-set}}
\obindex{set}
-A \dfn{set} object is an unordered collection of immutable values.
+A \dfn{set} object is an unordered collection of distinct hashable objects.
Common uses include membership testing, removing duplicates from a sequence,
and computing mathematical operations such as intersection, union, difference,
and symmetric difference.