dyadic m&f …

first I thought I should learn this construct
now I think I don’t need to

any suggestions?
is this considered an idiom that ought to be known and used?

Am 17.08.20 um 16:20 schrieb Henry Rich:
On the current implementation it is much preferable to use

bitmask operator@]^:["0 operand

rather than

bitmask 0&(] operator)"0 operand

They both execute at low rank, but the second version reinterprets the internal form ( 0&(] operator)^:bitmask ) for each atom.



I have yet to find an application where (x m&v y) is needed. Does anyone have one?  In the example above, the 0& could be any value and is used only as a way of getting the power function.


Henry Rich




On 8/17/2020 9:30 AM, David Lambert wrote:
Yes, thank you Roger for this explanation of dyadic & which i've recently
been thinking about how to incorporate into my j programming.

|Date: Sun, 16 Aug 2020 21:00:42 +0000 (UTC)
|From: "'Pascal Jasmin' via Programming" <programm...@jsoftware.com>
|To: "programm...@jsoftware.com" <programm...@jsoftware.com>
|Subject: Re: [Jprogramming] conditional application defined by bitmask
|Message-ID: <316224114.2834748.1597611642...@mail.yahoo.com>
|Content-Type: text/plain; charset=UTF-8
|
|Roger's solution includes an intermediate-advanced J concept I knew about,
and an advanced realization I did not previously realize/know about.
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