dly wrote:
> I believe there is probably a good reason why J does not map this
> function to the verb / and does map it to # but right now I cannot tell
> what that reason would be.  If someone knows and would like to enlighten
> me I would appreciate it and feel free to mock me for being so dense
> while you are about it.

APL uses / as both a function and an operator. This is a mistake, and
for example, leads to problems when using / in function composition. I
don't have an APL interpreter to hand, but seem to remember that you
could not do something like "boolean / each boxed_list", for this reason.

The J # is similar to the APL function /, while J / is similar to the
APL operator /.

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