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ICFP 2019
Sun 18 - Fri 23 August 2019 Berlin, Germany
Fri 23 Aug 2019 09:00 - 12:00 at Birch - Tutorials B3

With a fold, you can describe how to transforming a data structure with multiple elements into a single one. An example would be the sum of numbers in an array. However, working with the more well-known versions of fold, foldRight/reduceRight/etc. is complicated because you usually have two running variables at a time. This workshop explains patterns to make writing folds easier.

Unfolds are the opposite, in math speak the dual, of folds. They construct a data structure from a single element. This pattern is a bit less-known, as it occurs a bit less frequently than folds. A prime example would be to abstract over pagination from an external source, and transform the input into a continuous data structure.

Fri 23 Aug

09:00 - 12:00: Tutorials - Tutorials B3 at Birch
icfp-2019-tutorials09:00 - 12:00