Comments on: CHECK vs SCAN http://itknowledgeexchange.techtarget.com/itanswers/check-vs-scan/ Fri, 24 May 2013 10:59:22 +0000 hourly 1 By: philpl1jb http://itknowledgeexchange.techtarget.com/itanswers/check-vs-scan/#comment-57021 philpl1jb Fri, 10 Oct 2008 14:11:24 +0000 #comment-57021 Check might be used to test a text string to determine if it’s a valid UPC number – (only digits)

ValidSTR = ’1234567890′
ValidSTR Check UPCSTR BadPos
if BadPos > 0
Exsr BadUPCSTR
Endif

Here the string UPCSTR is tested for any value other than the 10 digits
If UPCSTR = ’92AB569ZZ999′
then BadPos would contain the value 3 – the first position containing the character ‘A’
because that character wasn’t in the ValidSTR ‘

Newer function that does the same thing
BadPos = %CHECK( ValidSTR : UPCSTR)
———————————————————————-
Scan would be used in a text search situation like partial name

SearchStr = ‘BOB’

SearchStr SCAN FullNameStr
If %found
Exsr AddRecSFL
Endif

Found values would be ‘BOB BLAKE’, ‘JIM ROBOBD’, ‘SUE BOBBY BOOP’
Not Found values would be ‘Bob Blake’, ‘PHIL GORILLA’, ‘MAX SMITH’

Alternative format

PosFnd = %SCAN( SearchStr : FullNameStr)
If PosFnd > 0
…

or

If %SCAN( SearchStr : FullNameStr) > 0

]]> By: tram http://itknowledgeexchange.techtarget.com/itanswers/check-vs-scan/#comment-57015 tram Fri, 10 Oct 2008 07:00:29 +0000 #comment-57015 Hi Philip or anybody
thanks for your answer. But still i am confused by the example you have given and Factor1 and Factor2 and result. Can you please elaborate and excplain it clearly with a better example…

regards
Ram

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