Re: problem with append
- To: mathgroup at smc.vnet.net
- Subject: [mg129529] Re: problem with append
- From: svkeeley at aol.com
- Date: Mon, 21 Jan 2013 00:06:42 -0500 (EST)
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- Delivered-to: l-mathgroup@wolfram.com
- Delivered-to: mathgroup-newout@smc.vnet.net
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- References: <kdg2kv$hf8$1@smc.vnet.net>
> For[a = 2, a < 6, a++,
>
> For[b = 2, b < 6, b++,
>
> Appendto[rr = {}, a^b]]]
>
> rr
One thing wrong is that everytime through the loop, you reset rr to an empty set. The AppendTo statement should read "Appendto[rr, a^b]" with rr assigned to {} before the loop.
This works:
rr = {};
For[a = 2, a < 6, a++,
For[b = 2, b < 6, b++, AppendTo[rr, a^b]]];
rr
{4,8,16,32,9,27,81,243,16,64,256,1024,25,125,625,3125} In[9]:= rr = {};
So does this:
rr = {};
For[a = 2, a < 6, a++,
For[b = 2, b < 6, b++, rr = Append[rr, a^b]]];
rr
{4,8,16,32,9,27,81,243,16,64,256,1024,25,125,625,3125}