Defining Tactic Functions in APL

J only gained a neat, in my opinion, at least, direct form or explicit form very recently. For all these years, it has always looked very clunky to me to write explicit code in J. And instead of the trailing parenthesis, you can use a double brace. It's certainly shouldn't be, shouldn't change your programming style. But although I do like the direct definition form, it's much cleaner and allows you to write functions in one line.