Lake County .NET Users' Group Helping the .NET developers of Lake County, Illinois 

Lake County .NET Users Group

We normally meet from 7-9 PM on the second Thursday of the month at the College of Lake County in Grayslake, Illinois. November and December meetings are on different dates. The College of Lake County provides space for us in the Technology Building in T3xx (see event for exact room). Please register before each meeting.


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  1. LCNUG November 12th - All You Need is Fold

    November 12, 2015 06:45 PM

    November 12, 2015 08:15 PM

    Location: College of Lake County in Grayslake, Illinois
    Room: T345
    On: Thursday, the 12th of November


    (Fold, fold, fold)
    (Fold, fold, fold)
    (Fold, fold, fold)

    "There's nothing you can do that can't be done
    Nothing you can sing that can't be sung
    Nothing you can say but you can learn how to play the game
    It's easy
    There's nothing you can make that can't be made
    No one you can save that can't be saved
    Nothing you can do but you can learn to be you in time
    It's easy"

    All you need is fold
    All you need is fold
    All you need is fold, fold
    Fold is all you need

    Using the work of Dr. Graham Hutton as our guide, we'll look at how to satisfy all of your list processing needs with one function, fold. First we'll start off simple by finding the length of a list, then we'll reverse a list, followed by and-ing and or-ing a list; all using fold. Next we'll look at implementing the higher order functions of: map, filter, and zip. Last we'll look at fold in action by using it on the Coin Changer kata. You'll never look at fold the same way again.


    Mike Harris is a software craftsman and life long learner, who is constantly searching for the best tools for the job. Mike enjoys learning new program languages, tools, and techniques which he uses in his day-to-day work as a Software Developer at Robert W. Baird & Co. Mike blogs at