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Nesting in patterns

• To: mathgroup at smc.vnet.net
• Subject: [mg8565] Nesting in patterns
• From: wself at viking.emcmt.edu (Will Self)
• Date: Sat, 6 Sep 1997 23:16:27 -0400
• Sender: owner-wri-mathgroup at wolfram.com

Can I have nested blanks in patterns?  Specifically,
I would like to be able to do something like

MatchQ[{{1,2},{1,2}}, {x__}__]

with the x matching the sequence 1,2 .  This doesn't work,
but is there something similar that I can do?

Will Self
Montana State University Billings
"The University of the Yellowstone Valley"