加载中
【SICP练习】71 练习2.42

 练习2.42 这道题曾经在C#中写过,但是写出来的代码却没有Lisp中的朴素。用了一大堆的数组和for循环。但是在这里,用car、cdr来构造就行了。 我们按书中给出的步骤来一步一步求解这个问题...

2015/09/08 21:51
0
【Project Euler】3 第三题

 //The prime factors of 13195 are 5, 7, 13 and 29. //What is the largest prime factor of the number 600851475143 ? static void Main(string[] args) { //int[] number = new int...

2015/09/08 21:51
14
【SICP练习】106 练习3.7

练习3-7 原文 Exercise 3.7. Consider the bank account objects created by make-account, with the password modification described in exercise 3.3. Suppose that our banking system r...

【Project Euler】2 第二题

 //Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 1 and 2, the first 10 terms will be: //1, 2, 3, 5, 8, 13, 21, 34, ...

2015/09/08 21:48
20
【SICP练习】107 练习3.8

练习3-8 原文 Exercise 3.8. When we defined the evaluation model in section 1.1.3, we said that the first step in evaluating an expression is to evaluate its subexpressions. But ...

【SICP练习】2 练习1.6

 练习1.6 这道题通过由一个新版本的if来引出,主要讨论的还是应用序和正则序的问题。我看到“将if提供为一种特殊形式”时还满头雾水,并不太清楚什么特殊形式。当再返回看if的语法时才发...

Android:Plug-in com.android.ide.eclipse.adt was unable to load class android

直接将Eclipse关掉,重新打开后也许就好了。 如还没好,就执行如下步骤: 1.如果还没有添加ADT,则:Help -> Add New Software -> Add 在“Name”中填入ADT。 2.如果已经安装了ADT,就直接将...

Android:problem opening wizard the selected wizard could not be started

直接将Eclipse关掉,重新打开后也许就好了。 如还没好,就执行如下步骤: 1.如果还没有添加ADT,则:Help -> Add New Software -> Add 在“Name”中填入ADT。 2.如果已经安装了ADT,就直接将...

【SICP练习】143 练习3.81

练习3-81 原文 Exercise 3.81. Exercise 3.6 discussed generalizing the random-number generator to allow one to reset the random-number sequence so as to produce repeatable sequen...

【SICP练习】148 练习4.4

练习4-4 原文 Exercise 4.4. Recall the definitions of the special forms and and or from chapter 1: ● and: The expressions are evaluated from left to right. If any expression eva...

【C++注意事项】5 Top-level const , The auto and decltype Type Specifier

top-level const As we’ve seen, a pointer is an object that can point to a different object. As a result, we can talk independently about whether a pointer is const and whether...

【C++注意事项】7 Library vector Type

List Initializer or Element Count? In a few cases, what initialization means depends upon whether we use curly braces or parentheses to pass the initializer(s). For example, whe...

【SICP练习】116 练习3.42

练习3-42 原文 Exercise 3.42. Ben Bitdiddle suggests that it’s a waste of time to create a new serialized procedure in response to every withdraw and deposit message. He says t...

2015/09/08 21:49
34
WPF和WinRT中的导航问题

 一、Frame、Page框架的相关介绍 1、Frame类: 继承层次结构 System.Object System.Windows.Threading.DispatcherObject System.Windows.DependencyObject System.Windows.Media.Visual ...

2015/09/08 21:46
70
继承和多态

 sealed关键字 如果我们将类标记为sealed,编译器将不会允许我们从这个类型派生。(C#结构总是隐式密封的。因此,我们永远不可以从结构继承结构,从类继承结构或从结构继承类。结构只能用...

2015/09/08 21:47
19
【C++注意事项】6 Library string Type

Processing Every Character? Use Range-Based for If we want to do something to every character in a string, by far the best approach is to use a statement introduced by the new s...

【数据结构】回顾表ADT

1.对于表的所有操作来说,都可以使用数组来实现,而且数组虽然是静态分配的,但内部存储数组的vector类却允许在需要时将数组的大小增加一倍。 2.正是因为数组的实现,使得printList以线性时间...

如何在Android Studio上使用Github

首先,登陆到Github上并创建一个新repository。在屏幕右上角,点击“+”标记,并且选择“New repository”。 现在完成这个表格以新建一个叫做testproject的新repository,让这个repository自...

没有更多内容

加载失败,请刷新页面

没有更多内容

返回顶部
顶部