In Appendix B (page 166) there is a "symbol table" translating the typeset symbols into valid Haskell syntax. HTH, Thomas On 14.07.2011 15:59, Patrick LeBoutillier wrote:
IIRC, Roelof uses "Programming in Haskell" as his learning material. One thing that I found confusing in that book (and in other books as well), is that the authors insist on using LaTeX mathematical symbols in Haskell code instead of "valid Haskell syntax". For example, in the exact example from the book that Roelof is trying to understand:
[x^2 | x<- [1..5]]
, the caret ('^') is not a caret, it's "an arrow pointing upwards", and the ASCII arrow ("<-") is not an ASCII arrow composed of '<' and '-', but instead "a single-character arrow". A table at the end of the book (Appendix B) explains the correspondance, but that might not be immediately obvious.