From 4512e9711b5d18e9ef49f2393418da44daf64575 Mon Sep 17 00:00:00 2001
From: Cedric Chee <cedric@invictusbyte.com>
Date: Thu, 2 Apr 2020 03:14:49 +0800
Subject: [PATCH] 4.6 Hello World

Add one last built-in function: puts.
puts prints the given arguments on new lines to STDOUT.
---
 evaluator/builtins.go | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/evaluator/builtins.go b/evaluator/builtins.go
index 452b472..14f4d67 100644
--- a/evaluator/builtins.go
+++ b/evaluator/builtins.go
@@ -1,6 +1,8 @@
 package evaluator
 
 import (
+	"fmt"
+
 	"github.com/cedrickchee/hou/object"
 )
 
@@ -109,4 +111,12 @@ var builtins = map[string]*object.Builtin{
 			return &object.Array{Elements: newElements}
 		},
 	},
+	"puts": &object.Builtin{
+		Fn: func(args ...object.Object) object.Object {
+			for _, arg := range args {
+				fmt.Println(arg.Inspect())
+			}
+			return NULL
+		},
+	},
 }