From: Robert Klemme <shortcutter@...>
Date: 2008-02-14T18:34:39+09:00
Subject: Re: my noob "numbering lines" programe. How to improve?

2008/2/14, Phrogz <phrogz@mac.com>:
> On Feb 13, 3:50 pm, Adam Akhtar <adamtempor...@gmail.com> wrote:
>  > Give us hints on how to improve this program. If you want to show your
>  > code off then go ahead but please give us the hints first i.e. what
>  > methods you would use, what you would rewrite in my code etc. Its so
>  > much better for me to go away and try and replicate your thinking than
>  > just reading it.
>
>
> Here are some suggestions:
>   * Use the += and *= compound assignment operators
>   * Use << instead of .write
>   * "%10s" % str  is like rjust, so
>   * "%#{numdigits}s %s" % [ linenumber, input ]

Or rather

"%*d %s" % [numdigits, linenumber, input ]
printf "%*d %s", numdigits, linenumber, input

>   * Look at each_with_index
>   * Think about a better way to calculate numdigits; e.g.:
>     * Math.log10( max ).ceil
>     * total_lines.to_s.size

* Look at ARGF and ARFG.lineno

Kind regards

robert

-- 
use.inject do |as, often| as.you_can - without end