In programming language theory, lazy evaluation, or call-by-need, is an evaluation strategy which delays the evaluation of an expression until its value...

before invoking the function. Lazy evaluation does not evaluate function arguments unless their values are required to evaluate the function call itself....

Short-circuit evaluation, minimal evaluation, or McCarthy evaluation (after John McCarthy) is the semantics of some Boolean operators in some programming...

and some authors define lazy evaluation as normal order evaluation or vice-versa, or confuse non-strictness with lazy evaluation.: 43–44  Boolean expressions...

non-strict evaluation, an evaluation strategy where the arguments to a function are not immediately evaluated. This form of non-strict evaluation is also...

in call by need. Lazy futures are of use in languages which evaluation strategy is by default not lazy. For example, in C++11 such lazy futures can be created...

allows the user to define non-strict functions, and hence may allow lazy evaluation. In most non-strict languages, the non-strictness extends to data constructors...

are normally eager evaluation, but a lazy evaluation option exists, indicated by the use of the d operator. Usually, to evaluate an expression of the...

typed, purely functional programming language with type inference and lazy evaluation. Haskell pioneered several programming language features such as type...

"Similar Functional Languages". Retrieved 26 November 2013. "(Scheme) 17. Lazy Evaluation". Retrieved 30 April 2020. "Records - Revised6 Report on the Algorithmic...

implementation of Hope used strict evaluation, but there have since been lazy evaluation versions and strict versions with lazy constructors. A successor language...

(1993). Partial Evaluation and Automatic Program Generation. Prentice Hall. ISBN 9780130202499. Danvy, O., ed. (1999). "Partial Evaluation and Semantics-Based...

to allow a lazy evaluation strategy in programs, unlike the traditional eager evaluation strategy of Standard ML. While Haskell uses the lazy model by default...

expensive process until the first time it is needed. It is a kind of lazy evaluation that refers specifically to the instantiation of objects or other resources...

functional in the sense that it did not use lazy evaluation. Okasaki simplified the data structure by using lazy evaluation with a bootstrapped data structure...

list transformations, and parameter passing. Related to lazy evaluation is the construction of lazy lists using gather and take, behaving somewhat like generators...

else n * f(n - 1)) (5) This works because R uses lazy evaluation. Languages that use strict evaluation, such as Python, C++, and other strict programming...

summarized below. Lazy evaluation is particularly interesting in a purely functional language: 31  because the order of the evaluation never changes the...

programs are evaluated, since eager evaluation will return the same result as lazy evaluation. However, it is still possible that an eager evaluation may not...

the client. Remote evaluation belongs to the family of mobile code, within the field of code mobility. An example for remote evaluation is grid computing:...

Evaluation Modeling with Mutable Data Concurrency: Time Is of the Essence Streams The Metacircular Evaluator Variations on a Scheme – Lazy Evaluation...

Dynamic loading Proxy pattern Lazy evaluation Lazy initialization Software design pattern "What is Lazy Loading | Lazy vs. Eager Loading | Imperva". Learning...

Scheme, Standard ML, and Haskell), including currying, immutability, lazy evaluation, and pattern matching. It also has an advanced type system supporting...

Haskell but with important differences: Omega uses strict evaluation (Hugs uses lazy evaluation); Ability to introduce new kinds; Allows writing functions...

programming languages, ML uses eager evaluation, meaning that all subexpressions are always evaluated, though lazy evaluation can be achieved through the use...

programming paradigms, including logic, functional (both lazy evaluation and eager evaluation), imperative, object-oriented, constraint, distributed, and...

programming concepts. It was first used for early experimentation with lazy evaluation. An implementation based on a stack, environment, control, dump virtual...

defined as having a strict evaluation strategy, although there are non-conforming back-ends which implement a lazy evaluation strategy. It is free and open-source...

Generating and computing with streams requires lazy evaluation, either implicitly in a lazily evaluated language or by creating and forcing thunks in an...

F# is an expression-based language using eager evaluation and also in some instances lazy evaluation. Every statement in F#, including if expressions...