Symbol Iota
⍳ — iota or index; Keystroke ALT+i ; Character (⎕UCS) 9075
Usage
Monadic use:
- Index Generator: ⍳R
Dyadic use:
- Index Of: L⍳R
Examples
⍳20 ⍝ Monadic example, generate the set of integers 1 through 20
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
'ABCDEFG' ⍳ 'BG' ⍝ Dyadic example, find/lookup the letters B and G in the string 'ABCDEFG' (pos 1 = A, pos 2 = B, ... pos 7 = G)
2 7 ⍝ Results found at positions 2 and 7 of string 'ABCDEFG'
See Also
- Index Generator: ⍳R
- Index Of: L⍳R
- System_Variable_IO ⎕IO or quad IO, Index Origin
- Array Lookup: L⍸R
- Indexing: R[L], R[L]←A, R[L]f←A, L⌷R, L⍉R, L⊃R
- Indices: ⍸R
| NARS 2000 Lang Tool Bar {{#ifeq:{{{en}}}|1||title="assign" style="border-width:thick; border-color:blue; background-color:yellow;" |← |
→ | bgcolor=cyan | title="assign" |← | → | }}
{{#ifeq:{{{en}}}|2||title="plus" style="border-width:thick; border-color:blue; background-color:yellow;" |+ |
- | × | ÷ | * | ⍟ | ⌹ | ○ | ! | ? | √ | bgcolor=cyan | title="plus" |+ | - | × | ÷ | * | ⍟ | ⌹ | ○ | ! | ? | √ | }}
{{#ifeq:{{{en}}}|3||title="mod" style="border-width:thick; border-color:blue; background-color:yellow;" || |
⌈ | ⌊ | ⊥ | ⊤ | ⊣ | ⊢ | |||||||||||||||||||
| ⌈ | ⌊ | ⊥ | ⊤ | ⊣ | ⊢ | ||||||||||||||||||||||||||||||||||||||||||||||||
| ≢ | < | ≤ | = | ≥ | > | ≠ | bgcolor=cyan | title="match" |≡ | ≢ | < | ≤ | = | ≥ | > | ≠ | }}
{{#ifeq:{{{en}}}|5||title="down caret" style="border-width:thick; border-color:blue; background-color:yellow;" |∨ |
∧ | ⍱ | ⍲ | bgcolor=cyan | title="down caret" |∨ | ∧ | ⍱ | ⍲ | }}
{{#ifeq:{{{en}}}|6||title="take" style="border-width:thick; border-color:blue; background-color:yellow;" |↑ |
↓ | ⊂ | ⊃ | ⌷ | ⍋ | ⍒ | ||||||||||||||||||||||
| ↓ | ⊂ | ⊃ | ⌷ | ⍋ | ⍒ | ||||||||||||||||||||||||||||||||||||||||||||||||
| ∊ | ⍸ | ⍷ | ∪ | ∩ | ⊆ | ⊇ | ~ | § | π | .. | bgcolor=cyan | title="iota" |⍳ | ∊ | ⍸ | ⍷ | ∪ | ∩ | ⊆ | ⊇ | ~ | § | π | .. | }}
{{#ifeq:{{{en}}}|8||title="comma" style="border-width:thick; border-color:blue; background-color:yellow;" |, |
⍪ | ⍴ | ⌽ | ⊖ | ⍉ | ||||||||||||||||||||||||
| ⍪ | ⍴ | ⌽ | ⊖ | ⍉ | |||||||||||||||||||||||||||||||||||||||||||||||||
| \ | ⌿ | ⍀ | ⊙ | ¨ | ⍨ | ⍤ | ⍡ | ⍥ | ⍦ | . | ∘ | ⍠ | ‼ | ⌻ | ∂ | ∫ | bgcolor=cyan | title="slash" |/ | \ | ⌿ | ⍀ | ⊙ | ¨ | ⍨ | ⍤ | ⍣ | ⍡ | ⍥ | ⍦ | . | ∘ | ⍠ | ‼ | ⌻ | ∂ | ∫ | }}
{{#ifeq:{{{en}}}|10||title="quotequad" style="border-width:thick; border-color:blue; background-color:yellow;" |⍞ |
⎕ | ⍎ | ⍕ | |||||||||||||
| ⎕ | ⍎ | ⍕ | |||||||||||||||||||||||||||||||||||||||||||||||||||
| ⍝ | ∇ | ∆ | ⍙ | _ | ⍺ | ⍵ | bgcolor=cyan | title="diamond" |⋄ | ⍝ | ∇ | ∆ | ⍙ | _ | ⍺ | ⍵ | }}
{{#ifeq:{{{en}}}|12||title="neg" style="border-width:thick; border-color:blue; background-color:yellow;" |¯ |
⍬ | ∞ | title="neg" |¯ | ⍬ | ∞ | ∅ | |||||||||||||||||||||||||||||||
| colspan=8 |Second Row | i j k | a | b | e | g | p | r | v | x | z | colspan=8 |Second Row | i j k | a | b | e | g | p | r | v | x | z | colspan=8 |Second Row | i j k | a | b | e | g | p | r | v | x | z | colspan=6 |Second Row | i j k | i j k l | g | p | r | v | x
}} | |||||||||||||
