# Dyadic

Jump to navigationJump to search

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.

## See Also

 See Also System Commands System Variables and Functions Operators

 Keyboard A+S ⍪ ≡ ≢ ⍒ ⍋ ⌽ ⍉ ⊖ ⍟ ⍱ ⍲ ⍠ ⌹ Alt ⋄ ¨ ¯ < ≤ ∅ ≥ > ≠ ∨ ∧ × ÷ Sh ~ ! @ # \$ % ^ & * ( ) _ + Key ` 1 2 3 4 5 6 7 8 9 0 - = A+S ⍷ √ ⍨ ⍸ ⍥ ⍣ ⍞ ⍬ ⊣ Alt ? ⍵ ∊ ⍴ § ↑ ↓ ⍳ ○ π ← → ⊢ Sh Q W E R T Y U I O P { } | Key q w e r t y u i o p [ ] \ A+S ∫ ∂ ⌻ ⍢ ⍙ ⍤ ⍫ ⌷ Alt ⍺ ⌈ ⌊ ∞ ∇ ∆ ∘ ‼ ⎕ ⍎ ⍕ Sh A S D F G H J K L : " Key a s d f g h j k l ; ' A+S ⊆ ⊇ ⍡ ⍭ ⊙ Alt ⊂ ⊃ ∩ ∪ ⊥ ⊤ ⍦ ⍝ ⍀ ⌿ Sh Z X C V B N M < > ? Key z x c v b n m , . /
 NARS 2000 LangToolBar ← → + - × ÷ * ⍟ ⌹ ○ ! ? √ | ⌈ ⌊ ⊥ ⊤ ⊣ ⊢ ≡ ≢ < ≤ = ≥ > ≠ ∨ ∧ ⍱ ⍲ ↑ ↓ ⊂ ⊃ ⌷ ⍋ ⍒ ⍳ ∊ ⍸ ⍷ ∪ ∩ ⊆ ⊇ ~ § π .. , ⍪ ⍴ ⌽ ⊖ ⍉ / \ ⌿ ⍀ ⊙ ¨ ⍨ ⍤ ⍣ ⍡ ⍥ ⍦ ⍥ . ∘ ⍠ ‼ ⌻ ∂ ⍞ ⎕ ⍎ ⍕ ⋄ ⍝ ∇ ∆ ⍙ _ ⍺ ⍵ ¯ ⍬ ∞ ∅ Second Row i j k i j k l g p r v x