Lazy evaluation is an evaluation strategy which holds the evaluation of an expression until its value is needed. Description download notas investigacion evaluacion perezosa comments. Only when the foreach statement moves to the next item does the iterator block evaluate up to the next yield statement consider the following example. Evaluacion perezosa info ratings comments mind map by leo yamm c, created over 3 years ago. Mar 30, 2020 download notas investigacion evaluacion perezosa. It means that expressions are not evaluated when they are bound to variables, but their evaluation is deferred until their results are needed by other computations.
Functional programming, department of computer science. Functional programming lazy evaluation tutorialspoint. The sharing can reduce the running time of certain functions by an exponential factor over other nonstrict evaluation strategies, such as callbyname. In programming language theory, lazy evaluation, or callbyneed is an evaluation strategy which delays the evaluation of an expression until its value is needed nonstrict evaluation and which also avoids repeated evaluations. Crea tus mapas mentales en linea y colabora mindmeister. In consequence, arguments are not evaluated before they are passed to a function, but only when their values are actually. Programacion logica y funcional ingenieria en sistemas. Gertler, sebastian martinez, patrick premand, laura b. Created by leo yamm c over 3 years ago close 26378. Pdf notas investigacion evaluacion perezosa free download pdf. Haskell is a good example of such a functional programming language whose fundamentals are based on lazy evaluation. In consequence, arguments are not evaluated before they are passed to a function, but only when their values are actually used. Lazy evaluation is a method to evaluate a haskell program. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views.
A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. However, lazy evaluation is difficult to combine with imperative features such as exception handling and inputoutput, because the order of operations becomes indeterminate. Lazy evaluation can lead to reduction in memory footprint, since values are created when needed. In programming language theory, lazy evaluation, or callbyneed is an evaluation strategy which delays the evaluation of an expression until its value is needed nonstrict evaluation and which also avoids repeated evaluations sharing.
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