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MathGroup Archive 2004

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Re: Sum of list elements

  • To: mathgroup at
  • Subject: [mg49365] Re: Sum of list elements
  • From: spam at husumtoften.invalid (Per Rønne)
  • Date: Fri, 16 Jul 2004 06:06:48 -0400 (EDT)
  • References: <> <cd35pk$qc8$> <cd5o9d$av7$>
  • Reply-to: spam at (Per Rønne)
  • Sender: owner-wri-mathgroup at

Per Rønne <spam at husumtoften.invalid> wrote:

> > Total@A
> > Total[A]
> > 
> > Total is new in version 5.
> Yes - isn't part of Teacher's Edition. Which uses 4.1 [Classic MacOS +
> Windows] and 4.2 [MacOS X].

But now, I've put the following in my init.m file:

Total[l_]:= Apply[Plus,l_]


And an erraneous version with two parameters:

In[56]:= l={1,{1,2},{3,4}}
Out[56]= {1,{1,2},{3,4}}

In[65]:= Total[l_,n_]:=
In[58]:= l
Out[58]= {1,{1,2},{3,4}}

In[66]:= Total[l,2]
From In[66]:= {5,7}
From In[66]:= 12
Out[66]= 12

Per Erik Rønne

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