Re: [BLACKBOX] EBNF question

From: [at]} <Bob>
Date: Thu, 16 Feb 2012 07:36:56 -0000

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>From: BlackBox [mailto:BLACKBOX{([at]})nowhere.xy
Danforth
>Sent: 16 February 2012 01:53
>To: BLACKBOX{([at]})nowhere.xy
>Subject: Re: [BLACKBOX] EBNF question

>On 2/15/2012 3:23 PM, Bob Walkden wrote:
>I can't write

>mandatoryParts = { a {a} | b {b} | c {c} | ... | z {z} } .

>Bob,
>Why not just write

>mandatoryParts = ( a {a} | b {b} | c {c} | ... | z {z} ) .
>Just parenthesize the list.  That would allow any order to occur and
>one of the options must be chosen.


Thanks, but that would mean only one of them is mandatory. I am trying to
state that each of them is mandatory, in any order.

B

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Received on Thu Feb 16 2012 - 08:36:56 UTC