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REBOL 3 Functions: exclude

exclude  set1  set2  /case  /skip  size

Returns the first data set less the second data set.


set1 [block! string! binary! bitset! typeset!] - First data set

set2 [block! string! binary! bitset! typeset!] - Second data set


/case - Uses case-sensitive comparison

/skip - Treat the series as records of fixed size

size [integer!]

See also:

difference   intersect   union   unique  


Returns the elements of the first set less the elements of the second set. In other words, it removes from the first set all elements that are part of the second set.

lunch: [ham cheese bread carrot]
dinner: [ham salad carrot rice]
probe exclude lunch dinner
[cheese bread]
probe exclude [1 3 2 4] [3 5 4 6]
[1 2]
string1: "CBAD"    ; A B C D scrambled
string2: "EDCF"    ; C D E F scrambled
probe exclude string1 string2
items: [1 1 2 3 2 4 5 1 2]
probe exclude items items  ; get unique set
str: "abcacbaabcca"
probe exclude str str

Note that performing this function over very large data sets can be CPU intensive.

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