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-
- W.G. Madison and Associates, Ltd.
- Consultants / Information Systems
- P. O. Box 898
- Greenbelt, MD 20770
- (301)552-7234
- (CompuServe 73240,342)
-
- PROGRAM LSTDSK
-
- This program is yet another WHEREIS-type program. It is unique,
- in that it implements a new wild-card matching algorithm, which
- is a generalization of that provided by DOS. I am making this
- program available, not particularly because the world is in dire
- need of another WHEREIS, but rather in an attempt to get user
- reaction to the new algorithm. As a bonus for you, however,
- LSTDSK displays all of the directory information for the files it
- finds -- not just the name.ext and subdirectory.
-
- After you have had a chance to use LSTDSK for a while, I would
- very much appreciate your feedback. Either drop a post card to
- the above address, or get back to me via EMAIL on CIS, using the
- above PPN. It will be much appreciated.
-
- The wild card algorithm of LSTDSK has the following
- characteristics:
-
- The "?" has the same meaning as it normally does -- exactly
- one occurrance of any character.
-
- The "*" also has the same meaning as normally -- a string of
- characters of length zero or greater.
-
- The difference comes in that, unlike DOS, scanning of a
- field does not stop when the first "*" is encountered.
- Rather, it continues for the length of the target string.
- Thus, in the DOS algorithm, the pattern "A*BC" will match
- the target string "AXYD", whereas they will not match in the
- new algorithm. This allows, for example, files to be
- searched when the name is known to contain the character
- "X" somewhere other than in the first and last character
- positions (pattern = "?*X*?"). Or an "X" and "Y", in that
- order, somewhere in the name but not necessarily contiguous
- (pattern = "*X*Y*").
-
- I am particularly interested in your responses to the questions
-
- 1. Do you find this additional flexibility useful?
-
- 2. On a scale of 1 (easy) to 5 (impossible) how usable is
- the algorithm?
-
- 3. Recognizing that, particularly if you got LSTDSK from a
- BBS or from CIS, you are at least moderately skillful in
- your use of computers, how would you judge the algorithm's
- usability for a novice user? (Please use the same 1 - 5
- scale as above.)
-
- Thanks in advance for your trouble.
-
- Bill Madison
- February 17, 1988
-
- ----------------end-of-author's-documentation---------------
-
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