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within

Check bounds

Syntax: x within y, within[x;y]

Where

  • x is an atom or list of sortable type/s
  • y is an ordered pair (i.e. (</)y is true), or the flip of a list of ordered pairs of the same count and type/s as x, the result is a boolean for each item of x indicating whether it is within the inclusive bounds given by y.
q)1 3 10 6 4 within 2 6
01011b
q)"acyxmpu" within "br"  / chars are ordered
0100110b
q)select sym from ([]sym:`dd`ccc`ccc) where sym within `c`d
sym
---
ccc
ccc

within is a left-uniform function: its result conforms to its left argument.

q)5 within (1 2 6;3 5 7)
010b
q)2 5 6 within (1 2 6;3 5 7)
111b
q)(1 3 10 6 4;"acyxmpu") within ((2;"b");(6;"r"))
01011b
0100110b

except, in, inter, union
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