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Thread: Problems with wcmatch

  1. #1
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    Default Problems with wcmatch

    I want to test a 4 character test string where each character can be an upper-case letter or a number.

    (wcmatch "ABCD" "[A-Z#][A-Z#][A-Z#][A-Z#]") returns T as expected
    (wcmatch "aBCD" "[A-Z#][A-Z#][A-Z#][A-Z#]") returns nil as expected
    (wcmatch "1BCD" "[A-Z#][A-Z#][A-Z#][A-Z#]") returns nil for some unknown reason

    I also tried "[A-Z,#][A-Z,#][A-Z,#][A-Z,#]" and "[#A-Z][#A-Z][#A-Z][#A-Z]" but these didn't work either.

    Can anybody tell me what I'm doing wrong?

    Any help is greatly appreciated.

  2. #2
    Programming Moderator BlackBox's Avatar
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    Default Re: Problems with wcmatch

    Code:
    (defun c:FOO (/ _match)
    
      (defun _match (string)
        (or
          (wcmatch string "[A-Z][A-Z][A-Z][A-Z]")                           ; AAAA
          (wcmatch string "#[A-Z][A-Z][A-Z]")                               ; #AAA
          (wcmatch string "[A-Z]#[A-Z][A-Z]")                               ; A#AA
          (wcmatch string "[A-Z][A-Z]#[A-Z]")                               ; AA#A
          (wcmatch string "[A-Z][A-Z][A-Z]#")                               ; AAA#
        )
      )
    
      (foreach x '("ABCD" "aBCD" "1BCD")
        (prompt (strcat "\n\""
                        x
                        "\" : Match "
                        (if (_match x)
                          "found "
                          "NOT found "
                        )
                )
        )
      )
      (princ)
    )
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  3. #3
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    Default Re: Problems with wcmatch

    That code does not meet the OP's conditions.
    There could be more that one numeric digit in the four digit string. The total number of possibilities are 16 combinations, not 5.

    The answer is:

    Code:
    (wcmatch "ABCD" "[1-Z][1-Z][1-Z][1-Z]")

  4. #4
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    Default Re: Problems with wcmatch

    A quick revision, check out the ascii table and it will search for the characters 0 to Z except for : to @.

    Code:
    (defun _match (str)
      (and 
        (wcmatch str "[0-Z][0-Z][0-Z][0-Z]")
        (not (wcmatch str "*[:-@]*"))
      )
    )
    Quote Originally Posted by ACE769734 View Post
    That code does not meet the OP's conditions.
    There could be more that one numeric digit in the four digit string. The total number of possibilities are 16 combinations, not 5.

    The answer is:

    Code:
    (wcmatch "ABCD" "[1-Z][1-Z][1-Z][1-Z]")

  5. #5
    Programming Moderator BlackBox's Avatar
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    Default Re: Problems with wcmatch

    Quote Originally Posted by ACE769734 View Post
    A quick revision, check out the ascii table and it will search for the characters 0 to Z except for : to @.

    Code:
    (defun _match (str)
      (and 
        (wcmatch str "[0-Z][0-Z][0-Z][0-Z]")
        (not (wcmatch str "*[:-@]*"))
      )
    )
    Well done, Ace.
    "How we think determines what we do, and what we do determines what we get."

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