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Length of actual parameters in a function call.

• To: mathgroup at smc.vnet.net
• Subject: [mg47077] Length of actual parameters in a function call.
• From: "E. Martin-Serrano" <eMartinSerrano at houston.rr.com>
• Date: Thu, 25 Mar 2004 05:48:05 -0500 (EST)
• Sender: owner-wri-mathgroup at wolfram.com

Hi,

A few weeks ago, reviewing some tutorials on pattern matching and error
handling, I came across an undocumented function to monitor the number of
parameters submitted to a function in a call; but somehow I lost its track
later. I guess that it must be something well-known by our specialists. Any
help about where to locate it?

The undocumented feature helps in tracking situations as when we define
"MyFunction[a_,b_,c_]:= something" and then it is called as "myFunction[a]"
leaving the function unevaluated.

E. martin-Serrano