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Tag: learn Objective-C

  • Objective-C Tutorial Roadmap

    Introduction to Objective-C

    What is Objective-C?

    Objective-C is an object-oriented programming language that extends the C language with messaging and runtime features, widely used for macOS and iOS development before Swift.

    Characteristics of Objective-C

    • Object-oriented and dynamic
    • Superset of the C programming language
    • Message-passing syntax
    • Powerful runtime system
    • Seamless integration with C and C++

    Variables and Data Types in Objective-C

    Data Types in Objective-C

    • Primitive data types
    • Derived data types
    • User-defined data types

    Variables

    • Variable declaration and initialization
    • Scope and lifetime of variables

    Operators in Objective-C

    Types of Operators

    • Arithmetic operators
    • Relational operators
    • Logical operators
    • Assignment operators
    • Bitwise operators

    Loops in Objective-C

    Types of Loops

    • for loop
    • while loop
    • do-while loop
    • Nested loops

    Functions in Objective-C

    Defining and Calling Functions

    • Function syntax
    • Function declarations and definitions

    Parameters and Return Values

    • Passing arguments to functions
    • Returning values

    Function Pointers

    • Understanding function pointers
    • Use cases and examples

    Blocks in Objective-C

    Introduction to Blocks

    • What are blocks?
    • Syntax of blocks

    Types of Blocks

    • Global blocks
    • Stack blocks
    • Heap blocks

    Numbers in Objective-C

    Number Types

    • Integer types
    • Floating-point numbers
    • NSNumber class

    Arrays in Objective-C

    Working with Arrays

    • Creating arrays
    • Accessing and modifying array elements

    Object-Oriented Programming in Objective-C

    Classes and Objects

    • Syntax and keywords
    • Types of classes
    • Types of objects

    Creating Subclasses

    • Inheritance basics

    Method Overriding

    • Overriding parent class methods
    • Using super to access parent methods

    Dynamic Typing and Polymorphism

    • Dynamic method resolution
    • Runtime polymorphism

    Pointers in Objective-C

    Pointer Basics

    • Understanding pointers
    • NULL pointers

    Pointer Operations

    • Pointer arithmetic
    • Array of pointers
    • Pointer to pointer

    Pointers and Functions

    • Passing pointers to functions
    • Returning pointers from functions

    Strings in Objective-C

    String Types

    • C-style strings
    • NSString and NSMutableString

    Structures in Objective-C

    Structures

    • Defining and using structures

    Pointers to Structures

    • Accessing structure members using pointers

    Preprocessors in Objective-C

    Preprocessors

    • Macro definitions
    • File inclusion

    Types of Preprocessors

    • #define
    • #include
    • Conditional compilation

    Typedef in Objective-C

    Typedef Usage

    • Creating aliases using typedef

    Typedef vs #define

    • Key differences and use cases

    Type Casting in Objective-C

    Type Casting

    • Implicit type casting
    • Explicit type casting

    Error, Log, and File Handling in Objective-C

    Log Handling

    • Using NSLog
    • Debugging techniques

    File Handling

    • Reading from files
    • Writing to files

    Error Handling

    • NSError and exception handling

    Command Line Arguments in Objective-C

    Command Line Arguments

    • Accessing arguments in Objective-C programs
    • Practical examples

    Inheritance in Objective-C

    Types of Inheritance

    • Single inheritance
    • Multilevel inheritance

    Data Encapsulation in Objective-C

    Encapsulation Concepts

    • Access specifiers
    • Data hiding and abstraction

    Categories in Objective-C

    Introduction to Categories

    • Extending existing classes

    Category Usage

    • Adding methods without subclassing

    Posing in Objective-C

    Posing

    • Understanding posing
    • Types of posing

    Extensions in Objective-C

    Class Extensions

    • Private methods and properties
    • Difference between categories and extensions

    Dynamic Binding in Objective-C

    Dynamic Binding

    • Runtime method binding

    Use Cases

    • Flexibility and dynamic behavior

    Composite Objects in Objective-C

    Composite Objects

    • Object composition

    Types of Composite Objects

    • Aggregation
    • Composition

    Foundation Framework in Objective-C

    Introduction to Foundation Framework

    • Core classes and utilities

    Types and Subtypes

    • Collections
    • Strings
    • Dates
    • File management

    Fast Enumeration in Objective-C

    Fast Enumeration

    • Iterating collections efficiently

    Memory Management in Objective-C

    Memory Management Concepts

    • Reference counting
    • ARC (Automatic Reference Counting)

    Best Practices

    • Avoiding memory leaks
    • Managing object lifecycles