C++开发者转战Objective-C：从C++到iOS编程入门指南

IOS
需积分: 12 0 下载量 120 浏览量 更新于2024-07-24 1 收藏 901KB PDF 举报
"《从C++到Objective-C》是一系列针对iOS开发者的文章，旨在帮助那些已经熟悉C++的程序员更好地理解和掌握Objective-C。作者认为，由于Objective-C与C++有相似之处，特别是都具有面向对象的特性，通过C++作为切入点学习Objective-C更为合适。该系列文章并非详尽的手册，而是侧重于通过对比C++来讲解Objective-C的高级概念，例如类的实现、动态机制等。 文章首先提到了Smalltalk，它是面向对象编程的先驱，Objective-C正是在此基础上发展起来的。Objective-C的目标是在C语言的基础上添加面向对象特性，从而克服C语言的局限性。虽然C++是更广为人知的选择，但Objective-C更接近Smalltalk的动态性和灵活性。Objective-C 2.0是该系列文章的基础，强调的是语言本身以及它在Mac OS X开发中的应用，即Cocoa框架。 Cocoa是一个类库，它为Objective-C提供了丰富的工具和API，使得开发人员能够构建高效、现代的Mac应用程序。类比于C++与Qt、Java与Spring的关系，Cocoa和Objective-C构成了开发平台的核心组件。学习者可以通过这一系列文章，不仅了解Objective-C语言，还能掌握如何利用Cocoa库进行实际的iOS开发，提升编程技能和效率。 这个系列文章适合C++开发者转型至iOS开发，或者想要深入了解Objective-C与C++差异的读者。通过对比学习，读者可以更好地理解Objective-C的面向对象特性和设计哲学，为后续深入iOS开发打下坚实基础。"

From C++ to Objective-C (从C++到ObjectivC)

2013-09-30 上传
标题为“From C++ to Objective-C (从C++到Objective-C)”的文章主要探讨了从C++转向Objective-C的程序员应该了解的关键概念和差异。Objective-C是一种主要用在苹果公司产品开发上的面向对象的编程语言，特别是在Mac...

From_C++_to_Objective-C

2011-03-15 上传
- 方法原型与调用：Objective-C中的方法调用采用了消息传递的方式，例如`[object someMethod:]`。 - 实例方法与类方法：实例方法是针对对象调用的，而类方法则是直接对类进行调用。 - `self`、`super`与成员函数...

Inside the C++ object model

2012-05-18 上传
diagrams, and performance measurements to relate object-oriented concepts to the underlying object model.</li></ul><p>If you are a C++ programmer who desires a fuller understanding of what is going ...

C++ How to Program (英文第8版）-高清带书签

2017-03-14 上传
5. **面向对象技术简介**（Introduction to Object Technology）： - 面向对象编程（OOP）的基本概念，包括类、对象、继承、多态性等。 6. **操作系统**（Operating Systems）： - 操作系统的作用、功能及常见的...

Programming.Principles+and+Practice+Using+C++

114 浏览量
correct, maintainable, and efficient code.Programming with Today’s C++The book is an introduction to programming in general, including object-oriented programming and generic programming. It is also...

void HW_IDcard_text::ParseIDCardJson(QString jsonStr) { QJsonParseError jsonError; QString disJson; QString headName; QJsonDocument doucment = QJsonDocument::fromJson(jsonStr.toUtf8(), &jsonError); if (!doucment.isNull() && (jsonError.error == QJsonParseError::NoError)) { if (doucment.isObject()) { QJsonObject object = doucment.object(); disJson = "姓名:" + parseJsonString(object, "name"); disJson +="\n性别:" + parseJsonString(object, "sex"); disJson +="\n民族:" + parseJsonString(object, "nation"); disJson +="\n出生年月:" + parseJsonString(object, "birthday"); disJson +="\n家庭住址:" + parseJsonString(object, "address"); disJson +="\n身份证号码:" + parseJsonString(object, "number"); disJson +="\n签发机关:" + parseJsonString(object, "department"); disJson +="\n有效期限:" + parseJsonString(object, "timeLimit"); disJson +="\n头像:" + parseJsonString(object, "Image"); //显示头像 headName = parseJsonString(object, "Image"); QPixmap pixmap; pixmap.load(headName); ui->Imagelabel->setPixmap(pixmap); ui->m_infoEdit->setText(disJson); } } }

2023-06-13 上传
函数首先通过 QJsonDocument 类的 fromJson() 方法将传入的 JSON 字符串转化为 QJsonDocument 类型的对象，再通过 QJsonObject 类的 object() 方法将 QJsonDocument 对象转化为 QJsonObject 类型的对象，然后使用...

C++ Mat to IplImage

2023-03-30 上传
To convert a Mat object to an IplImage object in OpenCV... for example, you need to create a new IplImage object with only 1 channel and then copy the data from the Mat object to the new IplImage object.

1） Inheritance：Suppose there is a base class `Animal` that has a `name` property and an `eat()` method. Now there are two derived classes `Cat` and `Dog`, both of which inherit from the `Animal` class. The `Cat` class has a `catchMouse()` method and the `Dog` class has a `bark()` method. Write the main() function that does the following: create a `Cat` object and a `Dog` object; assign values to their `name` properties, respectively; call the `eat()` and `catchMouse()` methods of the `Cat` object; call the `eat()` and `bark()` methods of the `Dog` object. 2）Polymorphism： Based on 1), add a virtual function speak() in the base class Animal to represent the behavior of animals making sounds. The two derived classes Dog and Cat implement the speak() function respectively, and output "Wow Woof Woof" and "Meow Meow Meow" respectively. Please define a pointer to the Animal object in the main function, let it point to the Dog object and the Cat object, and call their speak() function. Submit your completed program as a single C++ source file.

2023-05-26 上传
In the `main()` function, we define a pointer to an `Animal` object, and we use it to point to both a `Cat` object and a `Dog` object. We then call the `speak()` function through the pointer, and ...

Create a class called Rational for performing arithmetic with fractions. Use integer variables to represent the private data of the class – the numerator and the denominator. Provide a constructor that enables an object of this class to be initialized when it’s declared. The constructor should store the fraction in reduced form. For example, the fraction 2/4 would be stored in the object as 1 in the numerator and 2 in the denominator. In order to compute the reduced form, you need to write a reduction function which uses the Euclidean algorithm to get the greatest common divisor (GCD) of the numerator and denominator first and then divides GCD to get the reduced numerator and denominator. Provide public member functions that perform each of the following tasks: (a) Subtract a Rational number from the other Rational number. The result should be stored in reduced form. (b) Divide a Rational number by the other Rational number. The result should be stored in reduced form. (c) Print Rational numbers in the form a/b, where a is the numerator and b is the denominator. (d)Compare two Rational numbers to make sure which one is smaller or they are equal. (1 for the first number, 2 for the second number and 0 if they are equal) Please also write a main function to prompt the user to input two Rational numbers . Subtract one number from the other from these two numbers using (a) and then print the result using (c). Divide one number from the other from these two numbers using (b) and then print the result using (c). Compare these two Rational numbers using (d) and indicate which one is smaller or they are equal. 用c++5.11寫出，且使用using namespace std;

2023-06-02 上传
以下是符合要求的C++ 代码： ``` #include using namespace std; class Rational { private: int numerator, denominator; int gcd(int a, int b) { if (b == 0) return a; return gcd(b, a % b); } public:...

void Object::Initialize() { /** * Note: the code here is a bit tricky because we need to protect ourselves from * modifications in the aggregate array while DoInitialize is called. The user's * implementation of the DoInitialize method could call GetObject (which could * reorder the array) and it could call AggregateObject which would add an * object at the end of the array. To be safe, we restart iteration over the * array whenever we call some user code, just in case. */ NS_LOG_FUNCTION(this); restart: uint32_t n = m_aggregates->n; for (uint32_t i = 0; i < n; i++) { Object* current = m_aggregates->buffer[i]; if (!current->m_initialized) { current->DoInitialize(); current->m_initialized = true; goto restart; } } }函数的作用

2023-06-03 上传
这是一个 C++ 中的成员函数，它是一个对象的初始化方法。它会遍历该对象包含的所有聚合对象（即该对象包含的其他对象），并递归调用它们的初始化方法 DoInitialize()。这个方法的主要目的是确保所有聚合对象都已经被...
煽情泪
  • 粉丝: 1
  • 资源: 5
上传资源 快速赚钱

最新资源