Can C# Generic Method Constraints Restrict Type Arguments to Specific Numeric Types?

C#generic method constraint can only be limited to numerical types?

Introduction

Frees allow programmers to define the types that can operate on multiple data types. However, sometimes it may be necessary to limit the type of generic type. This question explores whether there is a method that can limit the generic parameters to only specific value types. The constraints of generic type limits

C#

Keywords allow developers to specify the constraints of generic parameters. The constraint can be used to ensure that the type parameters implement a specific interface or inherit the specific base class. The existing numerical interface

where Unfortunately, C# does not provide an interface that specializes in int16, int32, int64, UINT16, UINT32, and UINT64 types. Therefore, the keyword cannot be used directly to limit the generic parameters into these specific types.

Alternative method

As an alternative, please consider the following methods:

where

The interface :net 7 introduced the interface in the

name space. This interface indicates that all binary integer types can be used to limit the type parameter to an integer type.

Factory mode

: As Anders Hejlsberg recommends, you can use the factory mode to create a matrix supporting a variety of numerical types. In this method, a
• interface is defined, and the matrix uses the instance of this interface as a parameter. IBinaryInteger Strategic class : Another choice is to use the implementation of public interfaces and provide a strategic class that provides a specific implementation. These strategies can be passed to the matrix to enable support for different numerical types. System.Numerics IBinaryInteger<t></t>
Conclusion
• Although C# does not directly support the limitation of the generic parameters as a specific value type by constraint, it can use Calculator<t></t> interface, factory mode and strategy alternative method to achieve the required functions.

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