Re: Are pattern guards obsolete?

Donald Bruce Stewart writes:

The joy of pattern guards reveals once you have more conditions.

Of course, this is not really the joy of pattern guards. It is the joy of monads, with perhaps a few character strokes saved by a confusing overloading of (<-). But some people do seem to be used to this notation by now. So perhaps a good compromise would be to use a different operator for pattern guards, e.g. (<<-), instead of (<-). What do you say? Yitz