Can't use symbols in EEs?

[Michal-Martinek]

I tried removing spaces from a string like this

for l r in String
	case Remove [l + [' ' + r]] [l + r] . Remove
trace Remove { '  a  b ' . }

But it gives me an error ERROR: expected boolean but got symbol l

I suspect the EEs are for actual computing with concrete values, but I don't see how to work with strings otherwise..

[rexim]

Oh yeah, you can't destructurize strings like this, sorry.