Re: basic issue with do and :=

*To*: mathgroup at smc.vnet.net*Subject*: [mg60411] Re: [mg60402] basic issue with do and :=*From*: "David Park" <djmp at earthlink.net>*Date*: Fri, 16 Sep 2005 03:48:52 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

David, That's not what I get. Do[a[i] = i, {i, 10}] Do[b[i] := a[i] + 1, {i, 10}] Table[{a[i], b[i]}, {i, 10}] {{1, 2}, {2, 3}, {3, 4}, {4, 5}, {5, 6}, {6, 7}, {7, 8}, {8, 9}, {9, 10}, {10, 11}} But this could be better done with... Clear[a, b] a[i_] := i b[i_] := a[i] + 1 Table[{a[i], b[i]}, {i, 10}] {{1, 2}, {2, 3}, {3, 4}, {4, 5}, {5, 6}, {6, 7}, {7, 8}, {8, 9}, {9, 10}, {10, 11}} David Park djmp at earthlink.net http://home.earthlink.net/~djmp/ From: David [mailto:isolanoster at gmail.com] To: mathgroup at smc.vnet.net Hi all, this works as (I) expected ------------------------- Do[a[i] = i, {i, 10}] Do[b[i] =a[i]+1, {i, 10}] ------------------------- While this doesn't: -------------------------- Do[a[i] = i, {i, 10}] Do[b[i] :=a[i]+1, {i, 10}] --------------------------- [note ":=" instead of "=" on the second line]. namely the output is: "b[2]:=a[i]+1" for all i Is there any compact way to define: "b[i] :=a[i]+1" for all i ? Thank you in advance, David