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case statement to catch multiple symbols?

caver456

How should the list clause of a case statement clause be structured so that it matches on any one of a set of symbols?

Example:

case(a
   ('a println("A"))
   ('b println("B"))
   (('c 'd) println("C or D"))
)

a='a  --> the above code prints "A"

a='b  --> the above code prints "B"

a='c'  --> nothing is printed

a='d'  --> nothing is printed

Changing it to match on strings instead of symbols:

case(a
   ("a" println("A"))
   ("b" println("B"))
   (("c" "d") println("C or D"))
)

a="a"  --> the above code prints "A"

a="b"  --> the above code prints "B"

a="c"  --> the above code prints "C or D"

a="d"  --> the above code prints "C or D"

Basically I'd like to mimic the string behavior above, but the variable being tested is a symbol.  What's the proper way to structure the ('c or 'd) clause in this case?

Parents
  • Bingo, that's it. Thanks. To sum up, just using 'case' and not 'caseq':


    ; workey for strings
    ;case(a
    ; ("a" println("A"))
    ; ("b" println("B"))
    ; (("c" "d") println("C or D"))
    ;)

    ; no workey for symbols
    ;case(a
    ; ('a println("A"))
    ; ('b println("B"))
    ; (('c 'd) println("C or D"))
    ;)

    ; workey for symbols
    case(a
    (a println("A"))
    (b println("B"))
    ((c d) println("C or D"))
    )
Reply
  • Bingo, that's it. Thanks. To sum up, just using 'case' and not 'caseq':


    ; workey for strings
    ;case(a
    ; ("a" println("A"))
    ; ("b" println("B"))
    ; (("c" "d") println("C or D"))
    ;)

    ; no workey for symbols
    ;case(a
    ; ('a println("A"))
    ; ('b println("B"))
    ; (('c 'd) println("C or D"))
    ;)

    ; workey for symbols
    case(a
    (a println("A"))
    (b println("B"))
    ((c d) println("C or D"))
    )
Children
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