CFNumberCreate

CFNumberCreate is a function in the Core Foundation framework of macOS and iOS, used for creating CFNumber objects. CFNumber objects are used to represent numeric values in a platform-independent manner, supporting various numeric types such as integers, floating-point numbers, and Booleans. This function is part of the Core Foundation framework, which provides a set of fundamental data types and utilities for use in macOS and iOS applications.

The CFNumberCreate function takes several parameters to specify the type and value of the number to be created. The first parameter is the allocator, which is typically set to NULL to use the default allocator. The second parameter is the type of the number, specified using a CFNumberType enumeration. The third parameter is the value of the number, which can be passed as a pointer to the appropriate data type.

Here is a basic example of how to use CFNumberCreate to create a CFNumber object representing an integer:

CFNumberRef number = CFNumberCreate(NULL, kCFNumberIntType, &value);

In this example, value is an integer variable containing the value to be represented by the CFNumber object. The kCFNumberIntType constant specifies that the number is an integer. The resulting CFNumberRef is a reference to the newly created CFNumber object, which can be used in subsequent operations.

CFNumberCreate is a versatile function that can be used to create CFNumber objects of various types, making it a valuable tool for developers working with numeric data in macOS and iOS applications.