Re: help for newbie -- make an list-table where the key is integer and the value is a hash-table-record

[Sean Conner <sean@...>]

It was thus said that the Great douglas mcallaster once stated:
> Would a kind soul please help me get started with a simple job task.
> 
> Below job runs but returns the last record from my data file for all six
> lines in the data file.
> The print statements echo that it is working as I expect up until the
> table.insert command
> 
> I have looked thru both PiL and Beginning Lua Programming and cannot find
> how to properly do this simple task.
> 
> +++++++++++++++++++++++++++++
> 
> -- lines from input file d1dat.txt:
> -- one|123|aaa
> -- one|123|a
> -- two|45|a
> -- three|6789|b
> -- on1|123|b
> -- tw1|45|c
> -- th1|6789|c
> 
> io.input  ('d1dat.txt')
> io.output ('d1dat.out')
>     l= '_' -- scalar -- a line (char) from input file
>  rows= {}  -- a list ie int,val_l -- use ipairs
>  cols= {}  -- a hash ie nam,val   -- use  pairs
>  dsn1= {}  -- a list ie int,tbl   -- use ipairs
> 
> for l in io.lines()
>  do rows[#rows+1]= l
>  end
> 
> for _,v in ipairs(rows)
>  do local   a    = '_'
>     local     b  =  0
>     local       c= '_'
>             a,b,c= string.match (v, "(%w+)|(%d+)|(%w+)") -- parse the line
>     print (a,b,c)
>     cols['v1']= a -- populate the hash (table)
>     cols['v2']= b
>     cols['v3']= c
>     for kc,vc in pairs (cols) do print(kc,vc) end
>     table.insert (dsn1, cols)
> --  dsn1 [ #dsn1+1 ]=   cols -- gives same result: every row in dsn1 is the
> last row from input file
>  end
> 
> for k,v in ipairs (dsn1)
>  do io.write (k ,'-' ,v.v1 ,'-' ,v.v2 ,'-' ,v.v3 ,'\n')
>  end
> -- d1dat.out:
> -- 1-th1-6789-c
> -- 2-th1-6789-c
> -- 3-th1-6789-c
> -- 4-th1-6789-c
> -- 5-th1-6789-c
> -- 6-th1-6789-c

  If I understand what you want, what about?

	io,input('d1dat.txt')
	io.output('d1dat.out')

	data = {}

	for l in io.lines() do
	  a,b,c = string.match(l,"(%w+)|(%d+)|(%w+)")
	  table.insert(data, { a , b, c })
	end

	for k,v in ipairs(data) do
	  io.write(k,'-',data[1],'-',data[2],'-',data[3],'\n')
	end

  -spc