NB. Have to repost cause I forgot to replace x with bal in the line
NB. countmatches=. countmatches,(<( {: /:>(+/ each a e. each x)))
anmatch=: 4 : 0
NB. I usually reassign parameters so I dont modify them
NB. accidentally
bal=. x
values=. y
NB. Use this style of definition so that you wont have
NB. the extra box. Also notice that this is a local
NB. variable. Good programming practice.
countmatches=. 0 $ a:
NB. Loop through values
for_a. values do.
countmatches=. countmatches,(<( {: /:>(+/ each a e. each bal)))
end.
NB. the value of the last operation is the return value
NB. so you dont actually need this but is good programming practice.
countmatches
)
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Alex Rufon
Sent: Friday, August 29, 2008 4:59 PM
To: Programming forum
Subject: RE: [Jprogramming] Create Dyad ?
Hi John,
Here is my take on your situation:
anmatch=: 4 : 0
NB. I usually reassign parameters so I dont modify them
NB. accidentally
bal=. x
values=. y
NB. Use this style of definition so that you wont have
NB. the extra box. Also notice that this is a local
NB. variable. Good programming practice.
countmatches=. 0 $ a:
NB. Loop through values
for_a. values do.
countmatches=. countmatches,(<( {: /:>(+/ each a e. each x)))
end.
NB. the value of the last operation is the return value
NB. so you dont actually need this but is good programming practice.
countmatches
)
Actually, you can make a tacit definition for this but this is more
"readable".
r/Alex
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Mike Day
Sent: Friday, August 29, 2008 3:59 PM
To: Programming forum
Subject: Re: [Jprogramming] Create Dyad ?
John
Let's try again, with line-throws this time. I forgot Thunderbird (or
something) messes up my J copies. Sorry!
annmatch=: 3 : 0
NB. this default monad call assumes existence a global bals
bals annmatch y
NB. following colon ":" separates monad & dyad sections
:
NB. this is the start of the dyadic section
NB. next line uses the x input/argument
bals =. x
countmatches=: a: NB. you could keep this local by the alternative
(next line)
NB. countmatches=. a: NB. ... unless you need the array after return
NB. rest as before
)
Alternatively, you can create the dyad with 4 : 0 (or dyad : 0) as
follows:
annmatch=: 4 : 0
NB. don't include the single colon ":"
NB. next line uses the x input/argument
bals =. x
NB. the rest as before
)
Mike Day wrote:
> John
>
> 3 : 0 (or indeed monad : 0) defines a monad by default,
> but may be used to create both; try for example
>
> ... [see layout in new post above]
I expect you'll get many other helpful replies once they wake up
stateside (and elsewhere!)
>
> Mike
>
>
> Saunders, John (HEALTH) wrote:
>> Hi guys I have the below verb annmatch and would like to make it a
dyad
>> the noun bals is what I want to replace with an X value so I can make
>> this more flexible and not tied to bals ; just not exactly sure how
to
>> go about it ; hope I'm making sense and using the appropriate
j-language
>> here.
>>
>> Any direction would be appreciated
>> annmatch=: 3 : 0 countmatches=: a:
>> for_a.
>> y
>> do. countmatches=: countmatches,(<( {: /:>(+/ each a e. each bals)))
>> end.
>> }.countmatches
>> )
>>
>> thanks
>> John
>>
>>
>> -----Original Message-----
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>> Subject: Programming Digest, Vol 35, Issue 59
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