Mathematica 9 is now available
Services & Resources / Wolfram Forums / MathGroup Archive
-----

MathGroup Archive 2013

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: Dynamic scoping

  • To: mathgroup at smc.vnet.net
  • Subject: [mg129652] Re: Dynamic scoping
  • From: "Rolf.Mertig at gmail.com" <Rolf.Mertig at gmail.com>
  • Date: Sun, 3 Feb 2013 02:44:43 -0500 (EST)
  • Delivered-to: l-mathgroup@mail-archive0.wolfram.com
  • Delivered-to: l-mathgroup@wolfram.com
  • Delivered-to: mathgroup-newout@smc.vnet.net
  • Delivered-to: mathgroup-newsend@smc.vnet.net
  • References: <keiatl$qq3$1@smc.vnet.net>

Am Samstag, 2. Februar 2013 07:15:17 UTC+1 schrieb Daniel Huber:
> Block is supposed to be a dynamic scoping construct. Therefore, in the following, "Print" should be an undefined function. But consider:
> 
> 
> 
> Block[{Plus},
> 
>  t = ToString[Plus[1, 2]];
> 
>  Print[t];
> 
>  ]
> 
> 
> 
> The output of this is: "3" and not "Plus[1,2]" as it would be if "Print" has no defined meaning.
> 
> cheers, Daniel

Block[{Plus = "Plus"}, t = ToString[Plus[1, 2]];
 Print[t];]
will do what you want



  • Prev by Date: Re: Labelling each curve and changing grid in ParametricPlot
  • Next by Date: Re: Labelling each curve and changing grid in ParametricPlot
  • Previous by thread: Dynamic scoping
  • Next by thread: Re: Dynamic scoping