How do you reverse a string in Objective C?

How do you reverse a string in Objective C?

krzysdb’s solution 47 to Reverse String in Objective-C

  1. #import
  2. @interface NSString (Reverse)
  3. -(NSString *) reverseString;
  4. @end.
  5. @implementation NSString (Reverse)

How do I remove special characters from a string in Objective C?

1 Answer

  1. Save the file extension temporarily.
  2. Delete the file extension.
  3. Remove the unwanted characters.
  4. Add the file extension.

What is the difference between string and NSString?

NSString : Creates objects that resides in heap and always passed by reference. String: Its a value type whenever we pass it , its passed by value. like Struct and Enum, String itself a Struct in Swift. But copy is not created when you pass.

What is Objective C used for?

Objective-C is the primary programming language you use when writing software for OS X and iOS. It’s a superset of the C programming language and provides object-oriented capabilities and a dynamic runtime.

What is an NSString?

An NSString object encodes a Unicode-compliant text string, represented as a sequence of UTF–16 code units. The objects you create using NSString and NSMutableString are referred to as string objects (or, when no confusion will result, merely as strings). The term C string refers to the standard char * type.

What is an NSObject?

Essentially the NSObject is the base object type in Apple development. The NSObject defines all things that are shared between all classes that extend from it: NSObject is the root class of most Objective-C class hierarchies.

Is Objective-C still used?

Although Objective-C is still supported by Apple, it has never been an open-source language.

Where is the Objective-C language used?

Objective-C is a general-purpose, object-oriented programming language that adds Smalltalk-style messaging to the C programming language. This is the main programming language used by Apple for the OS X and iOS operating systems and their respective APIs, Cocoa and Cocoa Touch.

What is the difference between NSString and string?

NSString : Creates objects that resides in heap and always passed by reference. String: Its a value type whenever we pass it , its passed by value. String is automatically bridged to Objective-C as NSString.

What is a string C programming?

A String in C is nothing but a collection of characters in a linear sequence. ‘C’ always treats a string a single data even though it contains whitespaces. A single character is defined using single quote representation. A string is represented using double quote marks. Example, “Welcome to the world of programming!”

What is the use of NSObject?

The root class of most Objective-C class hierarchies, from which subclasses inherit a basic interface to the runtime system and the ability to behave as Objective-C objects.