Call me a hack ... go ahead "A":FOO < "A":BAR
"Numeric string" is an oxymoron in any language, I believe. Sincerely, David Laansma IT Manager Hubbard Supply Co. Direct: 810-342-7143 Office: 810-234-8681 Fax: 810-234-6142 www.hubbardsupply.com "Delivering Products, Services and Innovative Solutions" -----Original Message----- From: u2-users-boun...@listserver.u2ug.org [mailto:u2-users-boun...@listserver.u2ug.org] On Behalf Of Rob Sobers Sent: Friday, August 12, 2011 8:15 AM To: U2 Users List Subject: [U2] Comparing numeric strings Say you have two strings that happen to be nuneric: FOO = "401.0101" BAR = "401.0101000" Since UniBasic is untyped, even though I've wrapped each value in quotes "", they are treated as numbers. As a result, FOO EQ BAR evaluates to @TRUE. In most dynamically typed languages, there's an intuitive way to coerce the values at run-time (e.g, foo.to_s, foo.ToString, Str(foo)). I can't seem to figure out a good way to do this in UniBasic. In the manual, there's a function called SCMP that is supposed to be handy for comparing numeric strings, but it doesn't appear to work in UniData 7.2. # First try SCMP IF SCMP(FOO, BAR) THEN CRT "Not Equal" END ELSE CRT "Equal" END # Now try EQ IF FOO EQ BAR THEN CRT "Equal" END ELSE CRT "Not Equal" END Result: Equal Equal Also, the "tip" in the manual seems to be untrue: "Numbers specified in quotation marks are string data type. Numbers specified without quotation marks are numeric data type. The data type in a variable is determined by the data first loaded into it." Quotation marks appear to have absolutely no bearing on data type. -Rob _______________________________________________ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users _______________________________________________ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users
