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tex/code/Cargo.toml

@@ -4,8 +4,6 @@ version = "0.1.0"
 authors = ["Marko Korhonen <marko.korhonen@reekynet.com>"]
 edition = "2018"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
 [dependencies]
 actix-web = "2.0.0"
 actix-rt = "1.0.0"

tex/code/macro.rs

@@ -0,0 +1,25 @@
+macro_rules! laske {
+    (lisää $num1:literal ja $num2:literal) => {
+        println!("{} plus {} on {}", $num1, $num2, $num1 + $num2);
+    };
+    (vähennä $num1:literal ja $num2:literal) => {
+        println!("{} miinus {} on {}", $num1, $num2, $num1 - $num2);
+    };
+    (kerro $num1:literal ja $num2:literal) => {
+        println!("{} kertaa {} on {}", $num1, $num2, $num1 * $num2);
+    };
+    (jaa $num1:literal ja $num2:literal) => {
+        println!("{} jaettuna {} on {}", $num1, $num2, $num1 / $num2);
+    };
+}
+
+laske!(lisää 10 ja 269);
+laske!(vähennä 652 ja 3);
+laske!(kerro 256 ja 2);
+laske!(jaa 100 ja 50);
+
+// Tuloste:
+// 10 plus 269 on 279
+// 652 miinus 3 on 649
+// 256 kertaa 2 on 512
+// 100 jaettuna 50 on 2

tex/code/println.rs

@@ -0,0 +1,4 @@
+macro_rules! println {
+    () => { ... };
+    ($($arg:tt)*) => { ... };
+}