Re: x=2;Composition[f,FindMinimum][x+1,{x,a}]

*To*: mathgroup at smc.vnet.net*Subject*: [mg68342] Re: [mg68282] x=2;Composition[f,FindMinimum][x+1,{x,a}]*From*: "Chris Chiasson" <chris at chiasson.name>*Date*: Tue, 1 Aug 2006 07:00:22 -0400 (EDT)*References*: <200607310745.DAA26874@smc.vnet.net> <44CDF8C9.3070607@wolfram.com>*Sender*: owner-wri-mathgroup at wolfram.com

The crash confused matters for me. Thank you for clearing that up. Now that the source is known, perhaps someone could crack the "original" question I am trying to solve: x=2;{Composition[Hold][x+1,{x,a}],Composition[Hold,Hold][x+1,{x,a}]} produces {Hold[x+1,{x,a}],Hold[Hold[3,{2,a}]]} Why is it that in Composition[Hold], Composition does not effectively block the HoldAll attribute of Hold? The same thing happens with Identity. On 7/31/06, Carl K. Woll <carlw at wolfram.com> wrote: > Chris Chiasson wrote: > > The above command crashes my kernel on Windows XP and Linux. Anybody else? > > > > The crash comes when evaluating > > FindMinimum[3,{2,a}] > > Presumably you did not intend to evaluate this. > > In the development version, the above code does not cause a crash. > > Carl Woll > Wolfram Research > -- http://chris.chiasson.name/