We use cookies to distinguish you from other users and to provide you with a better experience on our websites. Close this message to accept cookies or find out how to manage your cookie settings.
We use cookies to distinguish you from other users and to provide you with a better experience on our websites. Close this message to accept cookies or find out how to manage your cookie settings.
Published online by Cambridge University Press: 05 May 2013
A sequence is a possibly infinite, ordered collection of elements seq [eo; e1;…]. The elements of a sequence are computed on demand only, as it would make no sense to actually compute an infinite sequence. Thus, at any stage in a computation, just a finite portion of the sequence has been computed.
The notion of a sequence provides a useful abstraction in a variety of applications where you are dealing with elements that should be processed one after the other. Sequences are supported by the collection library of F# and many of the library functions on lists presented in Chapter 5 have similar sequence variants. Furthermore, sequences can be defined in F# using sequence expressions, defining a process for generating the elements.
The type seq<′a> is a synonym for the .NET type IEnumerable<′a> and any .NET framework type that implements this interface can be used as a sequence. One consequence of this is, for the F# language, that lists and arrays (that are specializations of sequences) can be used as sequence arguments for the functions in the Seq library. Another consequence is that results from the Language-Integrated Query or LINQ component of the .NET framework can be viewed as F# sequences. LINQ gives query support for different kinds of sources like SQL databases and XML repositories.
To save this book to your Kindle, first ensure [email protected] is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.
Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
Find out more about the Kindle Personal Document Service.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Dropbox.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.
