From 6f72c6f2ac02072386d3ac9f475b535ec8739ae0 Mon Sep 17 00:00:00 2001
From: zhongsp <patrick.zhongsp@gmail.com>
Date: Wed, 11 Apr 2018 08:58:23 +0800
Subject: [PATCH] Improved code in 'Modules'. PR748

---
 doc/handbook/Modules.md | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/doc/handbook/Modules.md b/doc/handbook/Modules.md
index 11dafb5..5a52e23 100644
--- a/doc/handbook/Modules.md
+++ b/doc/handbook/Modules.md
@@ -769,8 +769,9 @@ class ProgrammerCalculator extends Calculator {
 
     constructor(public base: number) {
         super();
-        if (base <= 0 || base > ProgrammerCalculator.digits.length) {
-            throw new Error("base has to be within 0 to 16 inclusive.");
+        const maxBase = ProgrammerCalculator.digits.length;
+        if (base <= 0 || base > maxBase) {
+            throw new Error(`base has to be within 0 to ${maxBase} inclusive.`);
         }
     }