Re: [Haskell-cafe] Parse text difficulty

Henning Thielemann wrote:

I try to stay away from list comprehension because I can't memorize in which order the conditions are processed [...]

I remember it as being slowest-changing-to-the-left, just like the positional notation for integers. E.g. [[x,y] | x <- ['1'..'4'], y <- ['0'..'9']] will give you the numbers from 10 to 49 in order (as strings). Another way to remember is that it's the same order as its equivalent using the list monad: do { x <- ['1'..'4']; y <- ['0'..'9']; return [x,y] } -- Ben