From: Sascha Ebach <se@...>
Date: 2005-08-20T10:16:57+09:00
Subject: Re: [ANN] Rio 0.3.3

rio4ruby wrote:
> For your perusal -- Rio 0.3.3
> 
> == Overview
> 
> Rio is a Ruby I/O convenience class wrapping much of the functionality
> of IO, File and Dir. Rio also uses Pathname, FileUtils, Tempfile,
> StringIO, OpenURI, Zlib, and CSV to provide similar functionality using
> a simple consistent interface. In addition to forwarding the interfaces
> provided by IO, File, and Dir to an appropriate object, Rio provides
> a "grande" interface that allows many common application-level I/O and
> file-system tasks to be expressed succinctly.
> 
> == New for version 0.3.3
> * Expanded support and documentation for CSV files
>   Examples:
>   * Copy, changing the separator to a semicolon
>      rio('comma.csv').csv > rio('semicolon.csv').csv(';')
>   * Iterate through a file with each line parsed into an array
>      rio('afile.csv').csv { |array_of_fields| ...}
>   * Create an array of arrays of selected fields
>      array_of_arrays = rio('afile.csv').csv.columns(1..3,7).to_a
>   * Create a tab separated file of accounts in a UNIX passwd file,
>     listing only the username, uid, and realname fields
>      rio('/etc/passwd').csv(':').columns(0,2,4) > rio('rpt').csv("\t")

This is great. Thanks for this incredibly useful lib.

Sascha Ebach