My attempt to preserve the user's original spacing misfired. I'll see
what I can do.
Henry Rich
On 1/19/2021 1:18 PM, John Baker wrote:
Direct definition has added another, more convenient way to define local J
words
on the fly. It is particularly useful for creating verbs, adverbs and
conjunctions
within explicit definitions.
However there are gotchas. One thing I've noticed is the repeated addition
of a
trailing blank to DDs within words when you redefine a word. Consider:
ddblanks=: 3 : 0
NB.*ddblanks v-- show blank addition for local DDs.
NB. local dd verb
dad=. {{x + y}}
x dad y
)
Now fetch and redefine the word - JOD does a lot of this:
0!:0 'ddblanks=:' , 5!:5 <'ddblanks'
Every time the previous line is executed another blank is appended to the
local DD.
After half a dozen applications ddblanks looks like:
3 : 0
NB.*ddblanks v-- show blank addition for DDs.
NB. local dd verb
dad=. {{ x + y }}
x dad y
)
I can understand the need to add a trailing blank once but is it necessary
to keep doing this?
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