Hi Roger.
You state:
Do you feel that just conjunctions are unnecessary
or both conjunctions and adverbs are unnecessary?
I think adverbs are valuable, for example: I understand that in the verb
phrase "+/" the "/" is an adverb and is extremely valuable. I should state
that I haven't studied all conjunctions. There may be some that are needed,
and there may be situations where the "@", "@:" and "[:" are necessary. All
I know so far is that they don't seem necessary in any of the expressions I
have seen so far.
Don
----- Original Message -----
From: Don Watson <[email protected]>
Date: Tuesday, April 28, 2009 3:47
Subject: Re: [Jchat] Language S
To: Chat forum <[email protected]>
> Hi everyone,
>
> I can't believe I have been as thick as I
> have been. I was blinded by
> the whole structure of tacit J. Two things have drastically made
> me see the
> light - Ric talking about converting tacit back to explicit and
> actuallyreading the definition of tacit J. Tell me what's wrong
> with the following:
>
> Here is an explicit J expression to find a standard deviation:
> %:(+/*:y -(+/y)%#y)%<:#y
>
> To turn it into a revised form of tacit J, replace all the "y"s
> with "]" and
> enclose in parentheses: (%:(+/*:] -
> (+/])%#])%<:#])
> To convert back to explicit J, replace all the "]"s with "y"s
> and take away
> the extra parentheses: %:(+/*:y -
> (+/y)%#y)%<:#y
> Now make certain that the revised tacit J fits the
> definition: "In a
> tacit definition the arguments are not named and do not appear
> explicitly in the definition. The arguments are referred to implicitly
> by the syntactic requirements of the definition."
>
> I think it fits. There are no named arguments
> and it is implicitly told
> where to put the "y"s when we go back to explicit. For a left
> argument, the
> "[" replaces x. Where's the need for conjunctions?
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm
