September 2017 Update

Task/Identity-matrix/Sidef/identity-matrix.sidef

@@ -1,12 +1,14 @@
 func identity_matrix(n) {
-    1..n -> map { |i|
-        1..n -> map {|j| j == i ? 1 : 0 }
+    n.of { |i|
+        n.of { |j|
+            i == j ? 1 : 0
+        }
     }
 }
 
-(ARGV.len ? ARGV.map{.to_i} : [4, 5, 6]) -> each { |n|
-  say "\n#{n}:";
-  identity_matrix(n).each { |row|
-    say row.join(' ');
+for n (ARGV ? ARGV.map{.to_i} : [4, 5, 6]) {
+  say "\n#{n}:"
+  for row (identity_matrix(n)) {
+    say row.join(' ')
   }
 }