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Re: Using For[] for Generating Multiple Output Cells

  • To: mathgroup at smc.vnet.net
  • Subject: [mg104900] Re: Using For[] for Generating Multiple Output Cells
  • From: "Sjoerd C. de Vries" <sjoerd.c.devries at gmail.com>
  • Date: Fri, 13 Nov 2009 05:51:25 -0500 (EST)
  • References: <hdgpvc$i63$1@smc.vnet.net>

Hi Benjamin,

As the documentation of For states:

Unless an explicit Return is used, the value returned by For is Null.

You should use Print to generate the intended Grids

Cheers -- Sjoerd

On Nov 12, 1:02 pm, BenT <brt... at pdmusic.org> wrote:
> Consider this v7 code which works as intended:
>
> x = 65;
> n0 = Names[
>    StringJoin[
>     "System`", FromCharacterCode[x], "*"
>     ]
>    ];
> Grid[Partition[n0, 3], Alignment -> Left, Frame -> All]
>
> And now consider this code which allows far more versatility, for
> consecutive multiple outputs using the For[] function. BUT for some
> reason it doesn't appear to work at all! Does anyone know why? Can it
> be "fixed" as intended?
>
> For[x = 65, x < 91, x++,
>  n0 = Names[
>    StringJoin[
>     "System`", FromCharacterCode[x], "*"
>     ]
>    ];
>  Grid[Partition[n0, 3], Alignment -> Left, Frame -> All]
>  ]
>
> --- Benjamin Tubb



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