Add a negation operator

[fur] / examples / 08_negativity.fur

diff --git a/examples/08_negativity.fur b/examples/08_negativity.fur
new file mode 100644 (file)
index 0000000..7da32ad
--- /dev/null
+++ b/examples/08_negativity.fur
@@ -0,0 +1 @@
+print(-1)