C9 Lectures: Dr. Ralf Lämmel - Advanced Functional Programming - Type Classes
- Posted: Aug 17, 2010 at 12:41 PM
- 54,482 Views
- 15 Comments
Loading User Information from Channel 9
Something went wrong getting user information from Channel 9
Loading User Information from MSDN
Something went wrong getting user information from MSDN
Loading Visual Studio Achievements
Something went wrong getting the Visual Studio Achievements
Right click “Save as…”
Type classes also take functional or declarative programming to a whole new level—one may define relations and functions pointwisely on types. That is, in the same way a regular function pattern matches on value structure, a type-level function sort of matches
on type-definitional structure. This is quite a mouthful, I know.
There are various extensibility scenarios in the neighborhood of the Expression Problem that are interesting to consider from a design perspective, including several also addressable with type classes, and others that aren't. Look for the riddles (there are indeed several riddles in this lecture); many of them call for a discussion, rather than a straight solution. But beware—some of them are really difficult.
Thank you, Ralf, for another great lecture!
Get the slides for this lecture.
See Lecture 1 - The Expression Problem