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Re: Parenthesis reduction

  • To: mathgroup at smc.vnet.net
  • Subject: [mg126933] Re: Parenthesis reduction
  • From: David Bailey <dave at removedbailey.co.uk>
  • Date: Mon, 18 Jun 2012 05:46:11 -0400 (EDT)
  • Delivered-to: l-mathgroup@mail-archive0.wolfram.com
  • References: <jrlfoa$c2s$1@smc.vnet.net>

On 17/06/2012 21:47, Mat' G. wrote:
> Which command should one use to get
> 	{a, b, c}, {d, e, f}, {g, h, i}
> from
> 	{{a, b, c}, {d, e, f}, {g, h, i}}
> ?
>
The problem is that your first expression isn't syntactically valid, so 
I presume what you really mean is something like transforming
{{a, b, c}, {d, e, f}, {g, h, i}}
into say

fun[x,y,{a, b, c}, {d, e, f}, {g, h, i},z]

In other words that you want to embed it in something else:

In[1]:= tmp = {{a, b, c}, {d, e, f}, {g, h, i}}

Out[1]= {{a, b, c}, {d, e, f}, {g, h, i}}

In[2]:= fun[x, y, Sequence @@ tmp, z]

Out[2]= fun[x, y, {a, b, c}, {d, e, f}, {g, h, i}, z]

David Bailey
http://www.dbaileyconsultancy.co.uk




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