#SIMPLE DELAY FUNCTION IN JAVA CODE#

When using delayed evaluation, an expression is not evaluated as soon as it gets bound to a variable, but when the evaluator is forced to produce the expression's value. Applications ĭelayed evaluation is used particularly in functional programming languages. For programming languages, it was independently introduced by Peter Henderson and James H. Lazy evaluation was introduced for lambda calculus by Christopher Wadsworth and employed by the Plessey System 250 as a critical part of a Lambda-Calculus Meta-Machine, reducing the resolution overhead for access to objects in a capability-limited address space. 5.2 Simulating laziness in eager languages.5.1 Controlling eagerness in lazy languages.2.2 Working with infinite data structures.Eager evaluation is the evaluation strategy employed in most programming languages. The opposite of lazy evaluation is eager evaluation, sometimes known as strict evaluation. Lazy evaluation is difficult to combine with imperative features such as exception handling and input/output, because the order of operations becomes indeterminate. If not, the function is evaluated and another entry is added to the lookup table for reuse. If so, the stored result is simply returned. After a function's value is computed for that parameter or set of parameters, the result is stored in a lookup table that is indexed by the values of those parameters the next time the function is called, the table is consulted to determine whether the result for that combination of parameter values is already available. Lazy evaluation is often combined with memoization, as described in Jon Bentley's Writing Efficient Programs. The ability to define partially-defined data structures where some elements are errors.This allows for more straightforward implementation of some algorithms. The ability to define potentially infinite data structures.The ability to define control flow (structures) as abstractions instead of primitives.Functions help in collaboration by breaking up the work into tasks for team development.In programming language theory, lazy evaluation, or call-by-need, is an evaluation strategy which delays the evaluation of an expression until its value is needed ( non-strict evaluation) and which also avoids repeated evaluations ( sharing). Divide and conquer – Using functions helps break a program into smaller manageable chunks, hence making debugging and testing easier. This allows them to be used by more than one program.Ģ. Lastly it’s simple to relace the functions into libraries. With functions you can define it once and call it anywhere in the program to perform the task you need and you are not limited to the number of times you call the function.

#SIMPLE DELAY FUNCTION IN JAVA CODE#

Reusability of code – functions help in removing repetition of code in a program.Parameter list – it informs the compiler about the data type it will receive and the value to be returned.Function name – This the name of the function.If the fuction was to return a value, replace void with the data type of the returned value. Void, means that the function does not have a return value. Retur type – We have functions that return a value and functions that do not return anything.In this case static means the function is a not an object of the main class but a method that belongs to the main class. Modifier – ‘static’ is optional in a fuction defination.Private can oly be called inside the class We have other access specifiers such as private and protected.Protected, the method can only be called within the class and its subslcasses. ‘Public’ means that the function can be called from aywhere in the program. Access specifier – this shows the scope of availability of a fuction.Public static void myFuction(String name, int age )

Simple delay function in java