September 2017 Update

Task/24-game/Sidef/24-game.sidef

@@ -1,34 +1,34 @@
-const digits  = (1..9 -> pick(4));
-const grammar = Regex.new(
+const digits  = (1..9 -> pick(4))
+const grammar = Regex(
     '^ (?&exp) \z
       (?(DEFINE)
           (?<exp> ( (?&term) (?&op) (?&term) )+ )
           (?<term> \( (?&exp) \) | [' + digits.join + '])
-          (?<op> [-+*/] )
+          (?<op> [\-+*/] )
       )', 'x'
-);
- 
-say "Here are your digits: #{digits.join(' ')}";
- 
+)
+
+say "Here are your digits: #{digits.join(' ')}"
+
 loop {
-    var input = Sys.scanln("Expression: ");
- 
-    var expr = input;
-    expr -= /\s+/g;    # remove all whitespace
- 
-    input == 'q' && (
-        say "Goodbye.  Sorry you couldn't win.";
-        break;
-    );
- 
-    var given_digits = digits.map{.to_s}.sort.join;
-    var entry_digits = input.scan(/\d/).sort.join;
- 
-    if ((given_digits != entry_digits) || (expr !~ grammar)) {
-        say "That's not valid";
-        next;
+    var input = read("Expression: ", String)
+
+    var expr = input
+    expr -= /\s+/g     # remove all whitespace
+
+    if (input == 'q') {
+        say "Goodbye.  Sorry you couldn't win."
+        break
     }
- 
+
+    var given_digits = digits.map{.to_s}.sort.join
+    var entry_digits = input.scan(/\d/).sort.join
+
+    if ((given_digits != entry_digits) || (expr !~ grammar)) {
+        say "That's not valid"
+        next
+    }
+
     given(var n = eval(input)) {
         when (24) { say "You win!"; break }
         default   { say "Sorry, your expression is #{n}, not 24" }