Why does the order of down values come back?
- To: mathgroup at smc.vnet.net
- Subject: [mg124781] Why does the order of down values come back?
- From: Shizu <slivo.vitz at msa.hinet.net>
- Date: Mon, 6 Feb 2012 02:38:08 -0500 (EST)
- Delivered-to: l-mathgroup@mail-archive0.wolfram.com
In[]:= f[0] := 0;f[1] := 1;f[n_] := f[n - 1] + f[n - 2] In[]:= DownValues[f] Out[]:= {HoldPattern[f[0]] :> 0, HoldPattern[f[1]] :> 1, HoldPattern[f[n_]] :> f[n - 1] + f[n - 2]} In[]:= DownValues[f] = Reverse[DownValues[f]] Out[]:= {HoldPattern[f[n_]] :> f[n - 1] + f[n - 2], HoldPattern[f[1]] :> 1, HoldPattern[f[0]] :> 0} In[]:= DownValues[f] Out[]:= {HoldPattern[f[0]] :> 0, HoldPattern[f[1]] :> 1, HoldPattern[f[n_]] :> f[n - 1] + f[n - 2]} ==================================================== My question is: Why does the order of down values comes back after reordering? Thanks.
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- From: DrMajorBob <btreat1@austin.rr.com>
- Re: Why does the order of down values come back?