Yes, I've learned them all.
Sorry about the indentity mistake.
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|\/| Randy A MacDonald | APL: If you can say it, it's done.. (ram)
|/\| [EMAIL PROTECTED] |
|\ | |If you cannot describe what you are doing
BSc(Math) UNBF'83 þas a process, you don't know what you're doing.
Sapere Aude | - W. E. Deming
Natural Born APL'er | Demo website: http://156.34.95.92/
-----------------------------------------------------(INTP)----{ gnat }-
----- Original Message -----
From: "Roger Hui" <[EMAIL PROTECTED]>
To: "Programming forum" <[email protected]>
Sent: Friday, July 14, 2006 12:52 PM
Subject: Re: [Jprogramming] Explicit-to-tacit query
Perhaps it is time for you to learn J ;-)
(,x) {iota} y <=> , x {iota} y does not
apply in APL either. e.g. if x is a matrix with
more than one row then the LHS gives a result but
the RHS signals error. Perhaps you meant
x {iota} ,y <=> , x{iota}y .
i. is far superior to the APL iota (looking
for items is far superior to looking for atoms).
----- Original Message -----
From: Randy MacDonald <[EMAIL PROTECTED]>
Date: Friday, July 14, 2006 8:26 am
Subject: Re: [Jprogramming] Explicit-to-tacit query
Hello Roger;
Point taken. In fact, my attempt at reworking:
13 : ',x. i. y.'
[: , i.
doesn't apply because
(,x) {iota} y <=> , x {iota} y
is an identity that only works in APL.
Moral: {iota} is not i.
----- Original Message -----
From: "Roger Hui" <[EMAIL PROTECTED]>
To: "Programming forum" <[email protected]>
Sent: Friday, July 14, 2006 12:07 PM
Subject: Re: [Jprogramming] Explicit-to-tacit query
> Because it is not the same verb. , i. ] is
> equivalent to (x,y) i. y . In fact:
>
> 13 : '(x,y) i. y'
> , i. ]
>
>
>
> ----- Original Message -----
> From: Randy MacDonald <[EMAIL PROTECTED]>
> Date: Friday, July 14, 2006 7:36 am
> Subject: Re: [Jprogramming] Explicit-to-tacit query
>
>> Hello Roger;
>>
>> Why not:
>>
>> ,i.]
>
>> ----- Original Message -----
>> From: "Roger Hui" <[EMAIL PROTECTED]>
>> To: "Programming forum" <[email protected]>
>> Sent: Friday, July 14, 2006 10:31 AM
>> Subject: Re: [Jprogramming] Explicit-to-tacit query
>>
>>
>> > 13 : n uses a set of heuristics to do its work.
>> > Sometimes you can do better than what it does.
>> > If I were translating (,x) i. y I would have
>> > written ,@[ i. ] .
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