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-rw-r--r--challenge-253/mark-anderson/raku/ch-2.raku2
1 files changed, 1 insertions, 1 deletions
diff --git a/challenge-253/mark-anderson/raku/ch-2.raku b/challenge-253/mark-anderson/raku/ch-2.raku
index 6c98808ae5..0646729485 100644
--- a/challenge-253/mark-anderson/raku/ch-2.raku
+++ b/challenge-253/mark-anderson/raku/ch-2.raku
@@ -25,5 +25,5 @@ is-deeply weakest-rows([ <1 1 0 0 0>,
sub weakest-rows($m)
{
- $m.antipairs.sort>>.value
+ $m.sort(:k) # requires 2023.08 or later
}