High Quality Content by WIKIPEDIA articles! In computer programming, lazy evaluation is the technique of delaying a computation until the result is required. The benefits of lazy evaluation include: performance increases due to avoiding unnecessary calculations, avoiding error conditions in the evaluation of compound expressions, the capability of constructing potentially infinite data structures, and the capability of defining control structures as abstractions instead of as primitives. Languages that use lazy actions can be further subdivided into those that use a call-by-name evaluation strategy and those that use call-by-need.

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