A variable defaulting to a previous variable?
- To: mathgroup at smc.vnet.net
- Subject: [mg121920] A variable defaulting to a previous variable?
- From: Brentt <brenttnewman at gmail.com>
- Date: Thu, 6 Oct 2011 04:25:54 -0400 (EDT)
- Delivered-to: firstname.lastname@example.org
How would one go about making a variable default to a previous variable?
I would like results like this:
In= f[x_, y_: x] := x+y;
> In= f[2,3]
> Out= 5
> In= f
> Out= 6
But, of course, Mathematica won't let me use a previous argument for the
default of the next argument. Is there a way to do this?
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