Wrapper functions can be used to write error checking routines for pre-existing system functions without increasing the length of a code by a large amount by repeating the same error check for each call to the function. This is especially useful when using existing library code.

Wrapper functions can be used to adapt an existing class or object to have a different interface. In case the third party functions change or are updated, only the wrappers in the native application need to be modified as opposed to changing all instances of third party functions in the native application.Īdapting class/object interfaces A wrapper can be written for each of the third party functions and used in the native application. Wrapper functions are useful in the development of applications that use third-party library functions.

An example of this is the MouseAdapter and similar classes in the Java AWT library. Wrapper functions can be used to make writing computer programs easier. Wrapper functions are a means of delegation and can be used for a number of purposes. Wrapper functions are used to make writing computer programs easier by abstracting away the details of a subroutine's underlying implementation. For wrapper methods in feature selection, see Feature selection § Wrapper method.Ī wrapper function is a function (another word for a subroutine) in a software library or a computer program whose main purpose is to call a second subroutine or a system call with little or no additional computation.

What is a software wrapper