From: David Masover <ninja@...>
Date: 2009-09-29T00:28:36+09:00
Subject: Re: format problem

Think about what's happening when you add a newline to that row. How will that 
newline be printed? Specifically, which printf statement are you using?

On Monday 28 September 2009 08:38:49 am Li Chen wrote:
> Hi all,
>
> I have an 2D array and I write it a file using the following script. But
> when I open the written file I find the format is not what I want: the
> second and third row are not justified as the first row. I wonder how to
> correct it.
>
>
> Thanks,
>
> Li
>
> ############
> c=[  ['a','b','c'],['c1',2,1],['d1',3,4]    ]
> c.collect!{|row| row<<"\n"}
>
> File.open('test.txt','w') do |a_file|
> c.each do |row|
>         row.each {|e| ("#{e}"=~/[a-zA-Z]|\n/)  ?
> (a_file.printf("%s\t",e))  :  ( a_file.printf("%.2f\t",e))  }
> end
> end
>
> ########output#############
>
>
> a  b  c
>   c1  2.00  1.00
>   d1  3.00  4.00
>
>
> ####expected as follow########
> a  b  c
> c1  2.00  1.00
> d1  3.00  4.00