Data update

Task/Averages-Arithmetic-mean/Langur/averages-arithmetic-mean.langur

@@ -1,4 +1,4 @@
-val umean = fn x:fold(fn{+}, x) / len(x)
+val umean = fn x:fold(x, by=fn{+}) / len(x)
 
 writeln "  custom: ", umean([7, 3, 12])
 writeln "built-in: ", mean([7, 3, 12])

Task/Averages-Arithmetic-mean/Ursalang/averages-arithmetic-mean.ursa

@@ -0,0 +1,8 @@
+let mean = fn(l) {
+  var tot = 0
+  for i in l.iter() {
+    tot := tot + i
+  }
+  return tot/l.len()
+}
+print(mean([10, 30, 50, 5, 5]))