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Thread: Why does |= not work?

  1. #1
    thinBasic MVPs
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    Why does |= not work?

    i thought it were logical to assign something additional using OR as simple as this - but it does not work

    Uses "console"
    
    Long lTest
    
    lTest |= 1                     ' should equal  lTest = lTest | 1 
    PrintL lTest
    
    WaitKey
    
    I think there are missing some Forum-sections as beta-testing and support

  2. #2
    thinBasic MVPs
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    because this isn't C its ThinBasic!

    result = ANDb (Num1, Num2) ' Used to perform AND bitwise operations.
    result = ORb (Num1, Num2) 'Used to perform OR bitwise operations.
    result = expression1 OR expression2  ' Used to perform a logical disjunction on two expressions.
    | ' Alias of Or opertaor.
    
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  3. #3
    thinBasic MVPs
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    Yes correct.

    We have
    a += b
    
    which is just shorter and means the same as
    a = a + b
    
    also there are similar operations as -=, *= etc.

    but no
    a |= b
    ' that means
    a = a | b
    
    i was wondering because i typed it in that way, no doubt that it would work - but it does not.
    I think there are missing some Forum-sections as beta-testing and support

  4. #4
    In traditional BASIC. <> is not equal.
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  5. #5
    thinBasic MVPs
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    no, maybe it was a little vague, i did not write

    !=
    c-like "NOT equal"

    but

    |=
    basic-like "equals Itself OR Parameter"

    logic numeric operator that will prove "3 = 2 OR 1"

    A = A OR B

    A |= B
    Last edited by ReneMiner; 01-03-2015 at 08:29.
    I think there are missing some Forum-sections as beta-testing and support

  6. #6
    Super Moderator Petr Schreiber's Avatar
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    The note by Michael is good one,

    maybe if AND() and OR() could be used for logical, not bitwise operations, it would be nice.


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  7. #7
    thinBasic MVPs
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    For implicit assignement there are already available:

    +=, -=, *=, /=, \=

    We also have &= and += that are doing the same when it comes to stringExpressions, used to concatenate such.

    and these were reasoned to have:


    implicit AND
    &=

    numericVar &= numericExpression

    would equal
    numericVar = (numericVar AND numericExpression)


    implicit OR
    |=

    numericVar |= numericExpression

    equals then
    numericVar = (numericVar OR numericExpression)


    stringVar |= stringExpression

    equals
    stringVar = IIF$(Instr(stringVar, stringExpression), stringVar, stringVar & stringExpression)
    Last edited by ReneMiner; 02-03-2015 at 10:21.
    I think there are missing some Forum-sections as beta-testing and support

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