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+ | # $EPIC: diff.txt,v 1.2 2006/07/26 19:47:17 sthalik Exp $ | ||
+ | ======Synopsis:====== | ||
+ | $__diff__(<word list 1> / <word list 2>) | ||
+ | |||
+ | ======Technical:====== | ||
+ | * There must be a literal slash character ('/') that separates the two word lists. If it is omitted the empty string is returned. | ||
+ | * It is not required to have spaces on either side of the slash, but it also does not hurt to have them. | ||
+ | * The return value is a word list comprised of the negated set-difference of <word list 1> and <word list 2>, that is to say: | ||
+ | * The return value is a word list of all words that are in ONE BUT NOT BOTH of the word lists. | ||
+ | * All extra whitespace around words will be lost. | ||
+ | * Double quoted words are honored, but the double quotes will be lost in the return value. | ||
+ | |||
+ | ======Practical:====== | ||
+ | Use this function if you need to find the un-common elements of two | ||
+ | different word lists. | ||
+ | |||
+ | ======Returns:====== | ||
+ | All words that are in either <word list 1> or <word list 2> but not both. | ||
+ | |||
+ | ======Examples:====== | ||
+ | <file> | ||
+ | $diff(one two three / two three four) returns "one four" | ||
+ | $diff(one two / three four) returns "one two three four" | ||
+ | </file> | ||