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Nt1310 Unit 5 Function Essay

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Points to remember about Function:
 Function is defined by the standard types T & R where, input type is denoted as T and output type is denoted as R.
 Method apply() is the prime abstract functional method of Function interface. It takes a parameter t of type T as input and yields an output object of type R.
 There are two default methods in Function. The first default method is compose(), that combines the function on which it is activated (which is also mentioned as the current function) with another function that is named before, so that if the combined function is applied, then initially the before function is applied which changes the input type V to type T. Then, the current function alters the type T object to type R output. Accordingly, the combined function is attained whereas, compose() utilizes both the functions, in the course of converting type V to R.
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Accordingly, the combined function is attained by using andThen() default method utilizes both functions within the process to convert type T to type V.
 Function also consists of a static method identity() which is a plain function, that returns the input as it is. As the name implies, functional programming is created on functions as a first-class feature. Java 8 perhaps uplifts functions to a first-class feature with the Lambda Project and functional

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