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MFC Wizard创建的空应用程序中各个文件内容的解析
创建的MFC应用程序名为:wd,那么: 一、wd.h解析 // wd.h : main header file for the WD application // #if !defined(AFX_WD_H__89BE48D2_F377_4DF1_8C44_4D7372A61CE0__INCLUDED_) #define AFX_WD_H__89BE48D2_F377_4DF1_...
分类:编程语言   时间:2015-06-23 21:38:44    阅读次数:244
leetCode(25):Validate Binary Search Tree
Given a binary tree, determine if it is a valid binary search tree (BST). Assume a BST is defined as follows: The left subtree of a node contains only nodes with keys less than the node's key.Th...
分类:其他好文   时间:2015-06-23 15:50:51    阅读次数:92
Windows环境下npm install常见错误
Windows环境下npm install安装包依赖时,常出现一些错误,下面为个人解决办法:错误一缺少python环境:G:\nodejs\moviesite\node_modules\bcrypt>if not defined npm_config_node_gyp (node "D:\Progr...
分类:Windows程序   时间:2015-06-23 15:26:19    阅读次数:3001
#if defined和#if !defined(c语言的宏定义)
我们要检查a是否定义#if defined a#undef a#define a 200#endif上述语句检验a是否被定义,如果被定义,则用#undef语句解除定义,并重新定义a为200#ifndef a//如果a没有被定义#define a 100#endif#undef为解除定义#ifndef...
分类:编程语言   时间:2015-06-23 11:45:02    阅读次数:131
Happy Number
题目描述:Write an algorithm to determine if a number is "happy".A happy number is a number defined by the following process: Starting with any positive in...
分类:移动开发   时间:2015-06-23 09:57:52    阅读次数:197
leetCode(20):Balanced binary tree
Given a binary tree, determine if it is height-balanced. For this problem, a height-balanced binary tree is defined as a binary tree in which the depth of the two subtrees of every node never diffe...
分类:其他好文   时间:2015-06-22 09:55:14    阅读次数:139
PHP 判断数据类型
isset()://变量是否已经声明empty()://变量是否为空defined()://常量是否已经定义define()array_key_exists(mixed key, array search)://检查给定的键名或索引是否存在于数组中is_numeric ( mixed var ):/...
分类:Web程序   时间:2015-06-20 18:15:45    阅读次数:124
Balanced Binary Tree
Description:Given a binary tree, determine if it is height-balanced.For this problem, a height-balanced binary tree is defined as a binary tree in whi...
分类:其他好文   时间:2015-06-20 16:52:12    阅读次数:90
javascript 中null,undefined和空的应用
function?demo(){ ????alert(typeof?a?==?"undefined");//true } function?demo(){ ????alert(a?==?null);//console?error?a?is?not?defined } function?demo(a){ ????alert(typeof?a...
分类:编程语言   时间:2015-06-20 00:23:41    阅读次数:189
LeetCode——Balanced Binary Tree
Description:Given a binary tree, determine if it is height-balanced.For this problem, a height-balanced binary tree is defined as a binary tree in whi...
分类:其他好文   时间:2015-06-19 13:16:09    阅读次数:91
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