On Sun, Mar 21, 2010 at 10:25 PM, David Ward Lambert
<[email protected]> wrote:
> Puzzle: Find the Noun below that returns a as shown.
> Noun {:: <'ab'
> a
('';0) {:: <'ab'
a
Translation:
First use '' to select the contents of the only box.
Second, use 0 to select the letter 'a'.
Note also that {:: does not seem to follow the indexing rules
of { -- I do not know if this is a dictionary bug or not because
I do not know what "based on {" means in the dictionary entry
for fetch.
But, for example, ''&{@< 'ab' gives an empty result, and this
of course applies if 'ab' is replaced with something else.
It makes sense to me that '' { 'ab' would return empty but
I am not certain how to resolve the behaviors of { and {::
with empty left arguments and scalar right arguments. If
the existing implementation is correct I think dictionary entry
for fetch should explicitly mention this issue.
--
Raul
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