Dyadic

A dyadic function is one that takes an argument on the left and right of the function. Here is an example of a dyadic function named deal to deal hands of cards:
    ∇ k ← count deal cards;c
[1]   c ← count
[2]   k ←''
[3]   Q:
[4]   k ← k, cards ? 52
[5]   c ← c-1
[6]   →(c>0)/Q
[7]   k←count cards ⍴ k
    ∇
So an execution of this function to deal 6 hands of 7 cards could produce the following:
      6 deal 7
28 1 8 24 32 47 27
38 46 1 43 3 40 7
47 28 26 7 39 2 37
36 12 48 46 47 31 13
24 52 13 25 20 30 47
23 25 43 21 15 52 14

The numbers generated would have to be related to a rank and suit to display a particular card.

Some system functions are dyadic, in that you may present them one argument on each side of the function name, and it may return a value. The ⎕FMT function provides specialized formatting when used as a dyadic function.

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Key	a	s	d	f	g	h	j	k	l	;	'

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System Commands	System Variables and Functions	Operators

Dyadic

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