18
I wanted to use the Pick function with a condition. But there seems to be an issue here. Take a look at this:
selection = {0,1.2,3,0.,5};
Pick[{1,2,3,4,5},selection,elem_ /; elem =!= 0]
In Mathematica 8 it will give {1,2,3,4,5} instead of {2,3,4,5}. Please note, that the Pick function works ni...