Tutorial by Examples: ambiguo

Problem: You need to match text of a certain format, for example: 1-a-0 6/p/0 4 g 0 That's a digit, a separator (one of -, /, or a space), a letter, the same separator, and a zero. Naïve solution: Adapting the regex from the Basics example, you come up with this regex: [0-9]([-/ ])[a-z]\...

A frequent question about StackViews inside Scrollviews comes from ambiguous with/heigh alerts on interface builder. As this answer explained, it is necessary to: Add in the UIScrollView a UIView (the contentScrollView); In this contentScrollView, set top, bottom, left and right margins to 0 Se...

Say you're introducing a class of types that have a size in bytes. class SizeOf a where sizeOf :: a -> Int The problem is that the size should be constant for every value of that type. We don't actually want the sizeOf function to depend on a, but only on it's type. Without type applica...