Implement Supply.first

As a frontend of Supply.grep.
rakudo · Jan 18, 2020 · ace9853 · ace9853
1 parent 59f6a03
commit ace9853
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/src/core.c/Supply-factories.pm6 b/src/core.c/Supply-factories.pm6
@@ -272,6 +272,12 @@
         Supply.new(Grep.new(source => self.sanitize, :$test))
     }
 
+    method first(Supply:D: :$end, |c) {
+        $end
+          ?? self.grep(|c).tail
+          !! self.grep(|c).head
+    }
+
     my class ScheduleOn does SimpleOpTappable {
         has $!scheduler;