thanks, [EMAIL PROTECTED], that is what I was trying to achieve. "change" sure does the trick. However, it is interesting that REBOL let you do this: >> blk: [["A" "B" "C"] ["D" "E" "F"]] == [["A" "B" "C"] ["D" "E" "F"]] >> blk/1/1: "X" == ["X" "B" "C"] but not this: >> i: 1 == 1 >> blk/:i/:i: "Y" ** Syntax Error: Invalid word -- :i:. ** Where: (line 1) blk/:i/:i: "Y" >> [blk/:i/:i]: "Y" ** Syntax Error: Invalid word-get -- :. ** Where: (line 1) [blk/:i/:i]: "Y" all I am trying to do is substitute the "value" 1 with :i both are equivalent, are they not? IMHO expressions like these should be evaluatable as they are so convenient to construct and I can think of lots of other advantages for this type of syntax. Nitish [EMAIL PROTECTED] http://www.loka.net/ PS: Sorry, folks - for sending my first message out twice..I am learning...:) -----Original Message----- From: [EMAIL PROTECTED] [SMTP:[EMAIL PROTECTED]] Sent: Tuesday, 15 February 2000 20:32 To: [EMAIL PROTECTED] Subject: [REBOL] [REBOL] Prime number generator Re: [EMAIL PROTECTED] wrote: > I have one question, though (several actually, but this one will do for > now, I think :) > [flags/:mult: 0 gives this error > ** Syntax Error: Invalid word -- :mult:. > ** Where: (line 45) flags/:mult: 0 ;-- this does not work. why? NV 6/2/2000 > This stumped me. Earlier I had declared [mult: make integer! 1] Surely, it > is in scope. > REBOL doesn't support this kind of syntax: ->> i: 1 == 1 >> j: 2 == 2 ->> blk: [["A" "B" "C"] ["D" "E" "F"]] == [["A" "B" "C"] ["D" "E" "F"]] ->> blk/:i == ["A" "B" "C"] ->> blk/:i/:j == "B" ->> blk/:i/:j: "Q" ** Syntax Error: Invalid word -- :j:. ** Where: (line 1) blk/:i/:j: "Q" ->> change blk/:i/:j "Q" == "" ->> blk == [["A" "Q" "C"] ["D" "E" "F"]] ->> Is that what you wanted to achieve? -pekr- > Nitish. > [EMAIL PROTECTED] > http://www.loka.net/ begin 600 WINMAIL.DAT M>)\^(A(*`0:0" `$```````!``$``0>0!@`(````Y 0```````#H``$(@ <` M& ```$E032Y-:6-R;W-O9G0@36%I;"Y.;W1E`#$(`0V ! `"`````@`"``$$ MD 8`= $```$````0`````P``, (````+``\.``````(!_P\!````.P`````` M``"!*Q^DOJ,0&9UN`-T!#U0"`````&QI<W1 <F5B;VPN8V]M`%--5% `;&ES M=$!R96)O;"YC;VT``!X``C !````!0```%--5% `````'@`#, $````/```` M;&ES=$!R96)O;"YC;VT```,`%0P!`````P#^#P8````>``$P`0```!$````G M;&ES=$!R96)O;"YC;VTG``````(!"S !````% ```%--5% Z3$E35$!214)/ M3"Y#3TT``P``.0`````+`$ Z`0```!X`]E\!````#P```&QI<W1 <F5B;VPN M8V]M```"`?=?`0```#L`````````@2L?I+ZC$!F=;@#=`0]4`@````!L:7-T M0')E8F]L+F-O;0!33510`&QI<W1 <F5B;VPN8V]M```#`/U?`0````,`_U\` M`````@'V#P$````$`````````IE&`02 `0`O````4D4Z(%M214)/3%T@6U)% M0D],72!0<FEM92!N=6UB97(@9V5N97)A=&]R(%)E.@`G#P$%@ ,`#@```- ' M`@`/`!<`) `Q``(`5@$!(( #``X```#0!P(`#P`7`" ``0`"`"(!`0F `0`A M````.$$Y-3DP.48T04$Y,34T,4$U,S Q.#4S-#5!1$(U-#$`_08!`Y &`/P( M```A````"P`"``$````+`",```````,`)@``````"P`I```````#`"X````` M``,`-@``````0 `Y`."BKI"@=[\!'@!P``$````O````4D4Z(%M214)/3%T@ M6U)%0D],72!0<FEM92!N=6UB97(@9V5N97)A=&]R(%)E.@```@%Q``$````6 M`````;]WH)!)[/G/W!IZ2*.)+]/8MCJ7]0``'@`># $````%````4TU44 `` M```>`!\,`0````\```!R96)O;$!L;VMA+FYE= ```P`&$!0:C,P#``<0?P4` M`!X`"! !````90```%1(04Y+4RQ015122U)%3EI%3$]+0%126D-:+%1(051) M4U=(051)5T%35%)924Y'5$]!0TA)159%(D-(04Y'12)355)%1$]%4U1(1512 M24-+2$]7159%4BQ)5$E324Y415)%4U0``````@$)$ $```#-!0``R04``(\* M``!,6D9U-9Y'E@,`"@!R8W!G,3(U1C(`^ M@;F<U#B YG0'W( *D`^,"`&-H M"L#@<V5T," '$P*#`%#A$'9P<G$R$7D.4!)*F1#??7T*@ C((#L);\T.,#4" M@ J!=6,`4 L#AF,`00\",3 S,PNFA"!T$0!N:W,L`S"'&, "T1(B,38@4!% MB'(N2PEP;GIE"0"$:T ;@'HN8WH:<*<:$05 ! `@=QSB21U 5F$$(!N >0N M9QH`;PH@`-!H")!V92X@AB(0\0\@92(@<PAP\&4@9&\'D1H0'_ ;@$4-X&L? 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