Comparative Functions

< dyadic
APL: less than
Q: <

≤ dyadic
APL: less than or equal
Q: <=

= dyadic
APL: equal
Q: =

≥ dyadic
APL: greater than or equal
Q: >=

> dyadic
APL: greater than
Q: >

≠ dyadic
APL: not equal
Q: <>
or not and =, as in: q) not a=b

≡ dyadic
APL: match
Q: ~

≢ dyadic
APL: not match
Q: use not ~ e.g. not (3;4) ~ (4;3)

∊ dyadic
APL: membership
Q: I DON'T KNOW!

⍳ dyadic
APL: index of e.g. 4 6 5 ⍳ 6
Q: use ? (find) e.g. 4 6 5 ? 6

⍷ dyadic
APL: find
Q: I DON'T KNOW!