Data commit

Task/Caesar-cipher/Dyalect/caesar-cipher.dyalect

@@ -0,0 +1,26 @@
+func Char.Encrypt(code) {
+    if !this.IsLetter() {
+        return this
+    }
+    var offset = (this.IsUpper() ? 'A' : 'a').Order()
+    return Char((this.Order() + code - offset) % 26 + offset)
+}
+
+func String.Encrypt(code) {
+    var xs = []
+    for c in this {
+        xs.Add(c.Encrypt(code))
+    }
+    return String.Concat(values: xs)
+}
+
+func String.Decrypt(code) {
+    this.Encrypt(26 - code);
+}
+
+var str = "Pack my box with five dozen liquor jugs."
+print(str)
+str = str.Encrypt(5)
+print("Encrypted: \(str)")
+str = str.Decrypt(5)
+print("Decrypted: \(str)")