I really like your new : DEF "local function" mechanism -- it gives me much of the functionality that I've been wanting for years as a tool-writer. Yay!!
However, it would be nice if we could take it one step further and make it embeddable into expressions directly for short formulas called in only one or two places in the code. For instance, if I needed to trim spaces off a large vector of vectors, in Dyalog I should be able to do something like this:
{(+/^\⌽⍵=' ')↓⍵}¨list
This lets me use simple expressions as subroutines without having to define a formal function to do it.
Have you had any thoughts about that sort of capability?