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Task/Function-definition/EchoLisp/function-definition.echolisp

@@ -0,0 +1,25 @@
+(define (multiply a b) (* a b)) → multiply ;; (1)
+(multiply 1/3 666) → 222
+
+;; a function is a lambda definition :
+multiply
+     → (λ (_a _b) (#* _a _b))
+
+;; The following is the same as (1) :
+(define multiply (lambda(a b) (* a b)))
+multiply
+    → (🔒 λ (_a _b) (#* _a _b)) ;; a closure
+
+
+;; a function may be compiled
+(lib 'compile)
+(compile 'multiply "-float-verbose")
+    →
+💡 [0]     compiling _🔶_multiply ((#* _a _b))
+;; object code (javascript) :
+var ref,top = _blocks[_topblock];
+/* */return (
+/* */(_stack[top] *_stack[1 + top])
+/* */);
+
+multiply  → (λ (_a _b) (#🔶_multiply)) ;; compiled function