What are F# quotations?

Question

What are "quotations" in F#, and what are they used for?

They are used to make the novice F# programmer brain explode — yanta, Nov 18 '10 at 14:17

score 7 · Answer 1 · edited May 23 '17 at 11:48

7

See

http://msdn.microsoft.com/en-us/library/dd233212.aspx

and possibly

http://en.wikipedia.org/wiki/Homoiconicity

If you want scenarios, I bet you can find some by looking at

https://stackoverflow.com/questions/tagged/F%23+quotations

edited May 23 '17 at 11:48

Community

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answered Aug 23 '10 at 14:18

Brian

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score 4 · Answer 2 · answered Aug 23 '10 at 14:18

4

They are equivalent to Expression<> objects in C#. They represent the expression tree of the code therein in a way that can be accessed by other code at runtime.

answered Aug 23 '10 at 14:18

Marcelo Cantos

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Do `Expression<>` objects actually quote code or are they just values representing code? – J D Aug 31 '10 at 09:47

score 3 · Accepted Answer · edited Aug 23 '10 at 14:21

3

In short, a quotation is metadata that represents the code of a particular function or code snippet.

http://fortysix-and-two.blogspot.com/2009/06/traversing-and-transforming-f.html

edited Aug 23 '10 at 14:21

Matt Ball

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answered Aug 23 '10 at 14:19

AHungerArtist

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What are F# quotations?

3 Answers3

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