all
, any
¶
all
¶
Everything is true
all x all[x]
Returns a boolean atom 0b
; or 1b
where x
is
- a list and all items are non-zero
- a non-zero atom
- an empty list
Applies to all datatypes except symbols and GUIDs.
Where x
is a table, all
iterates over its columns and returns a dictionary.
q)all null ([] c1:`a`b`c; c2:0n 0n 0n; c3:10 0N 30)
c1| 0
c2| 1
c3| 0
Strings are cast to boolean.
all
is an aggregate function.
q)all 1 2 3=1 2 4
0b
q)all 1 2 3=1 2 3
1b
q)all "YNYN" / string casts to 1111b
1b
q)all () /no zeros here
1b
q)all 2000.01.01
0b
q)all 2000.01.02 2010.01.02
1b
q)if[all x in y;....] / use in control structure
domain: b g x h i j e f c s p m d z n u v t
range: b . b b b b b b b . b b b b b b b b
all
is a multithreaded primitive.
any
¶
Something is true
any x any[x]
Returns a boolean atom 0b
; or 1b
where x
is
- a list with at least one non-zero item
- a non-zero atom
Applies to all datatypes except symbols and GUIDs. Strings are cast to boolean.
any
is an aggregate function.
q)any 1 2 3=10 20 4
0b
q)any 1 2 3=1 20 30
1b
q)any "YNYN" / string casts to 1111b
1b
q)any () / no non-zeros here
0b
q)any 2000.01.01
0b
q)any 2000.01.01 2000.01.02
1b
q)if[any x in y;....] / use in control structure
domain: b g x h i j e f c s p m d z n u v t
range: b . b b b b b b b . b b b b b b b b
any
is a multithreaded primitive.