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MathGroup Archive 1999

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Range[imin,imax,di]; was it better in 3.0 than in 4.0 ?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg19570] Range[imin,imax,di]; was it better in 3.0 than in 4.0 ?
  • From: "Ersek, Ted R" <ErsekTR at navair.navy.mil>
  • Date: Wed, 1 Sep 1999 23:07:04 -0400
  • Sender: owner-wri-mathgroup at wolfram.com

Range[imin,imax,di] had an interesting capability in version 3.0, but the
capability is gone in version 4.0.

--------------------------------
Using version 3.0:

In[1]:=
Range[a,a+12 n, 2n]

Out[1]=
{a,a+2 n,a+4 n,a+6 n,a+8 n,a+10 n,a+12 n}

-----------------------------------------------

I thought that was rather nice, but using version 4.0 we get:


In[1]:=
Range[a,a+12 n,2n]

Range::range: Range specification in Range[a,a+12 n,2 n] is not a
machine-size integer.

Out[1]=
Range[a,a+12 n,2 n]


Now contrary to what the message above suggests, Range doesn't need Integer
arguments.  Both version 3 and version 4 give the same result in the
following example.


In[2]:=
Clear[x];
Range[x- Pi, x+ Pi, E]

Out[2]=
{-Pi + x, E - Pi + x, 2*E - Pi + x}


--------------------
Regards,
Ted Ersek

For Mathematica tips, tricks see 
http://www.dot.net.au/~elisha/ersek/Tricks.html




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