I want to have a calculation with variables of type T
But it does not support arithmetic operators
, is there a way to solve this problem?

 
Using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Text; 
Using System. The Threading. The Tasks; 

The namespace ConsoleApplication2 
{
Class Program 
{
The static void Main (string [] args) 
{
A The Add ();//T type is not suitable for this method is 
A The Add ();//jijubhuibuib 
A The Add (); 

The Console. ReadKey (); 
} 
} 
The class a 
{
Private static T T; 
Public static T the Add () 
{
//(1) a subclass object can be directly assigned to the parent class variables; 
//(3) if the superclass object containing is subclass object, can be this strong superclass object into a subclass object; 
//is: if the transformation is successful, returns true, or false on failure. 
If (t is int | | (t as string==null))//if the return to true proved t type int and string 
{
Console. WriteLine (" copy and connection or add "); 
T=t + t; 
return t; 
} 
The else 
{
Console. WriteLine (" T type is not suitable for this method "); 
} 

} 
} 
} 

This is my search of a former post, this post seems to be no solutions to the
https://bbs.csdn.net/topics/210029007

CodePudding user response:

 
Using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Text; 
Using System. The Threading. The Tasks; 

The namespace ConsoleApplication2 
{
Class Program 
{
The static void Main (string [] args) 
{
A The Add ();//T type is not suitable for this method is 
A The Add ();//jijubhuibuib 
A The Add (); 

The Console. ReadKey (); 
} 
} 
The class a 
{
Private static T T; 
Private static string tt; 
Public static T the Add () 
{
//(1) a subclass object can be directly assigned to the parent class variables; 
//(3) if the superclass object containing is subclass object, can be this strong superclass object into a subclass object; 
//is: if the transformation is successful, returns true, or false on failure. 
If (t is int | | (t as string==null))//if the return to true proved t type int and string 
{
Console. WriteLine (" copy and connection or add "); 
Tt=t.T oString () + t.T oString (); 
return t; 
} 
The else 
{
Console. WriteLine (" T type is not suitable for this method "); 
} 

Return the default (T); 

} 
} 
} 

CodePudding user response:

You need to reload the arithmetic operators

CodePudding user response:

If you want to do a lot of arithmetic operation, you don't do generics,

Such as can directly write dead for:

Class double precision Fourier transform
{
.
}

Class
Fourier transform{
.
}

CodePudding user response:

reference 1st floor tangyanzhi1111 response:

 
Using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Text; 
Using System. The Threading. The Tasks; 

The namespace ConsoleApplication2 
{
Class Program 
{
The static void Main (string [] args) 
{
A The Add ();//T type is not suitable for this method is 
A The Add ();//jijubhuibuib 
A The Add (); 

The Console. ReadKey (); 
} 
} 
The class a 
{
Private static T T; 
Private static string tt; 
Public static T the Add () 
{
//(1) a subclass object can be directly assigned to the parent class variables; 
//(3) if the superclass object containing is subclass object, can be this strong superclass object into a subclass object; 
//is: if the transformation is successful, returns true, or false on failure. 
If (t is int | | (t as string==null))//if the return to true proved t type int and string 
{
Console. WriteLine (" copy and connection or add "); 
Tt=t.T oString () + t.T oString (); 
return t; 
} 
The else 
{
Console. WriteLine (" T type is not suitable for this method "); 
} 

Return the default (T); 

} 
} 
} 

Bosses you this can realize the string connected operation, not achieve ints

CodePudding user response:

refer to the second floor OrdinaryCoder response:

you have to reload the arithmetic operators

The overloaded operators? And the specific how to do? Who can teach me?

CodePudding user response:

The

reference 3 floor github_36000833 response:

if you want to do a lot of arithmetic operation, don't do a generic,

Such as can directly write dead for:

Class double precision Fourier transform
{
.
}

Class
Fourier transform{
.
}

The bosses generics are used to do?
My understanding is a generic is a generic data type, so you can use when writing some method or class generic so that I can write the class or method can do processing method for a variety of data types or class
And I understand if there is any error or inaccurate, if please welcome bosses guidance for

CodePudding user response:

reference 5 floor xuerueheng reply:

Quote: refer to the second floor OrdinaryCoder response:

You need to reload the arithmetic operators

The overloaded operators? And the specific how to do? Who can teach me?

This is a generic programming, unable to generic overloaded operators, this approach won't solve,
Two ways to solve:
1. Use expression expression assembled addition
2. With the dynamic type of alternative generics

CodePudding user response:

 class Program 
{
The static void Main (string [] args) 
{
Console. WriteLine (" Hello World!" ); 

Var a=new a (); 
A.t=1; 
Var ret=a.A dd (); 

A.t="123"; 
Var ret1=a.A dd (); 
} 
} 

Class A 
{
Public static dynamic t; 

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