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Re: priorities between @, @@ and //

  • To: mathgroup at smc.vnet.net
  • Subject: [mg108745] Re: priorities between @, @@ and //
  • From: Murray Eisenberg <murray at math.umass.edu>
  • Date: Tue, 30 Mar 2010 05:00:16 -0500 (EST)

This is always a thorny issue when you use "abbreviations" such as 
prefix form, suffix form, etc.  In the Documentation Center, look at the 
page:

   tutorial/OperatorInputForms

There you'll see two long tables listing all the input forms in order of 
decreasing precedence.

On 3/29/2010 8:20 AM, guerom00 wrote:
>
> Just a quick question : what are the priority between all those
> operators ? I mean :
> - what is f@x//g ? Is it f[g[x]] or g[f[x]]
> - what is f@@{a,b}[[2]] ? Is it f[b] or (f[a,b])[[2]]
>
> You see what I mean... What are the rules for the priority of all
> those operators ?

-- 
Murray Eisenberg                     murray at math.umass.edu
Mathematics & Statistics Dept.
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University of Massachusetts                413 545-2859 (W)
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