I just looked at the meaning of life. That's unlikely to work with many "hosted" APLs because of the use of eval, which is a security concern in an online REPL.

However, if you remove the execute you can still get a string version:

      ⊖⍕⊃⊂|⌊-*+○⌈×÷!⌽⍉⌹~⍴⍋⍒,⍟?⍳0

42

You can paste this into the REPL at TryAPL.org.