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Re: Bug in Pattern Matching with Condition?

• To: mathgroup at smc.vnet.net
• Subject: [mg97279] Re: Bug in Pattern Matching with Condition?
• From: dh <dh at metrohm.com>
• Date: Tue, 10 Mar 2009 05:32:32 -0500 (EST)
• References: <goqpe7$lrn$1@smc.vnet.net> <goqugt$ngp$1@smc.vnet.net>

Hi Jens,

can you elaborate a bit. According to the definition of Verbatim , 

Verbatim[Condition][_, _]] should match literally "Condition][_, _]" and 

not Condition[a, b]. Therefore it looks more like  another bug to me and 

adds to the mystery of why MatchQ[Condition[a, b], Condition[_, _]] 

evaluates to False.

Daniel



Jens-Peer Kuska wrote:

> Hi,

> 

> but

> 

> MatchQ[Condition[a, b], Verbatim[Condition][_, _]]

> 

> Regards

>    Jens

> 

> cesar wrote:

>> Hi Mathematica group, do you get any idea of

>> why the following sentences don't give true?

>>

>> MatchQ[Condition[a, b], Condition[_,_]]

>> MatchQ[Condition[a, b], Condition[__]]

>> MatchQ[Condition[a, b], HoldPattern[Condition[__]]]

>>

>> Is this a bug?

>>

>> Cheers,

>> Cesar

>>

> 

• Follow-Ups:
  • Re: Re: Bug in Pattern Matching with Condition?
    • From: Andrzej Kozlowski <akoz@mimuw.edu.pl>