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Using the 'lazy' Keyword

This snippet uses the lazy keyword to create a delayed computation. It then show's using 'force' to evaluate the computation.

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let lazyValue = lazy ( 2 + 2 )
let actualValue = Lazy.force lazyValue

printfn "%i" actualValue
val lazyValue : Lazy<int>

Full name: Script.lazyValue
val actualValue : int

Full name: Script.actualValue
Multiple items
active recognizer Lazy: Lazy<'T> -> 'T

Full name: Microsoft.FSharp.Core.ExtraTopLevelOperators.( |Lazy| )

--------------------
type Lazy<'T> = System.Lazy<'T>

Full name: Microsoft.FSharp.Control.Lazy<_>
val printfn : format:Printf.TextWriterFormat<'T> -> 'T

Full name: Microsoft.FSharp.Core.ExtraTopLevelOperators.printfn
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More information

Link:http://fssnip.net/x
Posted:13 years ago
Author:Robert Pickering
Tags: lazy

This web site is created using F# and Suave web server. It is hosted on Azure and the source code is on GitHub. Contributions are welcome!

The first version of fssnip.net has been created by @tomaspetricek back in 2010. This web site is a new, open-source and contribution-friendly version.