That’s true for the most simple cases only.
That way one gets a display of a value rather than of a definition.
Consider these definitions and “definition query”
(as I said, it’s simply a display of value):
adv =: 1 : 'm&+'
v =: 5 adv
v
5&+
In more complicated situations you would want to see the
complete sentence to the right of =: . So it’s good to
have a mechanism easing retrieval of this information.
Am 08.03.20 um 17:45 schrieb David Lambert:
This is great! Maybe I whereDefined will help me diagnose my qt mysteries.
Meanwhile, let's remember one of the great joys of j that doesn't happen
with most other languages. We get the definition directly.
echo
0 0 $ 1!:2&2
Date: Sat, 7 Mar 2020 14:28:05 -0500
From: Devon McCormick <[email protected]>
To: J-programming forum <[email protected]>
Subject: Re: [Jprogramming] Origin of definitions (was Programming
Digest, Vol 174, Issue 7)
Message-ID:
<cagdempgf5bv5tg9q8iy7uykgegcallnh7d6wuy7vdypmxfe...@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
I've used this, courtesy of Dan Bron, for years:
whereDefined=: 3 : '(4!:4{.;:y) {:: (4!:3''''),<''Source of definition not
found for '',''.'',~y'
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