answersLogoWhite

0


Best Answer

The only reason to overload a template function is to provide an overload that differs in the number and type of arguments that cannot be addressed by the template function alone. You simply declare them as you would any other overload. The overloads may themselves be template functions, but there must be no ambiguity: every template function must generate an unique function signature. Remember that template functions generate overloads at compile time on an as-required basis.

User Avatar

Wiki User

11y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: How will you overload a template function?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Continue Learning about Engineering

Differentitate between overload function and function template?

An overloaded function is a function that has two or more implementations that each operate upon a different type. Function templates allow the compiler to generate overloaded functions on an as required basis for any function where the implementations only differ by type.


What are the different types of overloading allowed in c plus plus?

There are only two types: user-defined and compiler-generated. User-defined overloads are the ones you specifically write. Compiler-generated overloads are created by the compiler based upon a template function that you define. The only real difference is that with a template function you only need to write one version of the function, and the compiler will generate the actual overloads on an as-required basis. With user-defined overloads you must write each overload in full. Template functions save a lot of time and maintenance, however they are only practical when the only difference between the overloads is the type of argument. That is, if the implementation is exactly the same regardless of type, then template functions are clearly a better option than writing out each overload by hand. Moreover, if you ever need to alter the implementation, there's only one function to modify.


What is the differnce between ordinary function and template function of c language?

The c language does not have template functions. That is a c++ thing.


When to create a template function?

A template function is used when you want to write some kind of function that can be applied to different data types. It is a form of overloading, but you don't have to actually write all of the overloaded variants.


When would you use overloading in C plus plus?

A function overload is a function that has more than one implementation. Each implementation must have a unique function signature, only the name remains the same, however functions cannot differ by return type alone. Many overloads can be implemented as template functions, where the only difference is the type or types being operated upon. Manual overloading is typically required when the number of arguments differ. Generally, we try to implement function overloads such that one overload provides the implementation for the general case, while all others are expressed in terms of the general case. Where this may result in a loss of efficiency, we generalise as much as is possible and provide a limited number of specialised implementations to cater for exceptional cases. As a typical example, to find the largest of any two values of the same type, regardless of the type, we can use a template function: template<typename T> const T& largest (const T& a, const T& b) { return a>b?a:b; } This function provides the general case. From this we can provide specialisations, such as an overload to cater for three arguments which can be expressed directly in terms of the general case: template<typename T> const T& largest (const T& a, const T& b, const T&c) { return largest (largest (a, b), c); }

Related questions

Differentitate between overload function and function template?

An overloaded function is a function that has two or more implementations that each operate upon a different type. Function templates allow the compiler to generate overloaded functions on an as required basis for any function where the implementations only differ by type.


What are the different types of overloading allowed in c plus plus?

There are only two types: user-defined and compiler-generated. User-defined overloads are the ones you specifically write. Compiler-generated overloads are created by the compiler based upon a template function that you define. The only real difference is that with a template function you only need to write one version of the function, and the compiler will generate the actual overloads on an as-required basis. With user-defined overloads you must write each overload in full. Template functions save a lot of time and maintenance, however they are only practical when the only difference between the overloads is the type of argument. That is, if the implementation is exactly the same regardless of type, then template functions are clearly a better option than writing out each overload by hand. Moreover, if you ever need to alter the implementation, there's only one function to modify.


What is the differnce between ordinary function and template function of c language?

The c language does not have template functions. That is a c++ thing.


When to create a template function?

A template function is used when you want to write some kind of function that can be applied to different data types. It is a form of overloading, but you don't have to actually write all of the overloaded variants.


What is the function of an overload release coil?

it is used to protect the motor


When would you use overloading in C plus plus?

A function overload is a function that has more than one implementation. Each implementation must have a unique function signature, only the name remains the same, however functions cannot differ by return type alone. Many overloads can be implemented as template functions, where the only difference is the type or types being operated upon. Manual overloading is typically required when the number of arguments differ. Generally, we try to implement function overloads such that one overload provides the implementation for the general case, while all others are expressed in terms of the general case. Where this may result in a loss of efficiency, we generalise as much as is possible and provide a limited number of specialised implementations to cater for exceptional cases. As a typical example, to find the largest of any two values of the same type, regardless of the type, we can use a template function: template<typename T> const T& largest (const T& a, const T& b) { return a>b?a:b; } This function provides the general case. From this we can provide specialisations, such as an overload to cater for three arguments which can be expressed directly in terms of the general case: template<typename T> const T& largest (const T& a, const T& b, const T&c) { return largest (largest (a, b), c); }


What is the main function of an overload?

When a person has information overload, it means that they receive so much information at one time that their brain cannot process it all.


When and how a c compiler generate actual function from its template?

At the point it is used.


Defining more than one function by the same name is called?

overload


How does a DNA molecule act as a template?

Template DNA is a DNA you want to amplify. So you should know what you are amplifying before a PCR or you can make it by sequencing your PCR product.


What is an important function of the non-sense strand?

it serves as template for RNA synthesize


Distinguish between class template and template class?

Template class: A generic definition or a parametrized class not instantiated until the client provides the needed information. It?s jargon for plain templates. Class template: A class template specifies how individual classes can be constructed much like the way a class specifies how individual objects can be constructed. It?s jargon for plain classes. Class template is a template used to generate template classes. We cannot declare an object of a class template. Template class is an instance of a class template.