On Thu, May 1, 2014 at 12:49 PM, Raul Miller <[email protected]> wrote:
>
>
> I would like to take this opportunity to provide a friendly reminder
> that in Chrome you should always use "paste as plain text" to paste
> from a J session into the browser. (This is Ctrl+Shift+V on windows
> and probably Cmd+Shift+V on mac and perhaps also in Safari.)
Thanks for the reminder. I'll repost the function below. I'll also
suggest posting in Plain Text Mode -- I realized that it had gotten
turned off. With plain text mode on, Chrome will give you a visual cue
that it's adding extra line feeds.
template_log_ =: 0 : 0
Log=:Log,<('F MONAD (y=',(":y),')')
Last=: {: Log
5!:5 <'Last'
:
Log=:Log,<('F DYAD (y=',(":y),' x=',(":x),')')
Last=: {: Log
5!:5 <'Last'
)
NB. replaces value in template
lr_log_=:template_log_ rplc 'F';]
NB. adverb to return logging verb
lf=: 1 : '3 : (lr_log_ u)'
>
> Often it's just easier to focus on practical uses rather than the
> details of just how simple this actually is.
I think beginners may be more interested in the execution instead of
the parsing.
Compare the following:
trace '+/ i.5'
--------------- 3 Adverb -----
+
/
+/
--------------- 1 Monad ------
i.
5
0 1 2 3 4
--------------- 0 Monad ------
+/
0 1 2 3 4
10
==============================
10
To:
> Log [ ( '+'lf/ i.5 )[ (Log=:'')
+ DYAD (y=4 x=3)
+ DYAD (y=<'+ DYAD (y=4 x=3)' x=2)
+ DYAD (y=<'+ DYAD (y=<''+ DYAD (y=4 x=3)'' x=2)' x=1)
+ DYAD (y=<'+ DYAD (y=<''+ DYAD (y=<''''+ DYAD (y=4 x=3)'''' x=2)'' x=1)' x=0)
For someone who is wondering what insert does, I think this more
clearly illustrates it. I realize there's opportunity to clean up the
output in my version.
Thanks for the feedback
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm
