From: "Jesús Gabriel y Galán" Date: 2010-10-07T19:04:28+09:00 Subject: Re: save only first line from string? On Thu, Oct 7, 2010 at 12:00 PM, Josh Cheek wrote: > 2010/10/7 Jesús Gabriel y Galán > >> On Thu, Oct 7, 2010 at 7:44 AM, Terry Michaels >> wrote: >> > Benoit Daloze wrote: >> >> On 4 October 2010 04:19, Terry Michaels wrote: >> >>> Hi. What's the most simple and elegant way to remove all the contents >> of >> >>> a String except for the first line? (Assume string consist of one line, >> >>> multiple lines, or no lines, and assume that we don't know which OS we >> >>> are on.) >> >>> -- >> >> >> >> Probably the most elegant, with Ruby 1.9: >> >> >> >> str = str.lines.first >> >> >> >> add ".chomp" if you want to remove the trailing EOL. >> > >> > Definitely the most elegant! (Defining 'elegant' as simple, natural, >> > easy to read) Thanks! This seems to work fine on my system with ruby >> > 1.8.7 (patchlevel 302). Possibly not the most efficient (requires entire >> > string to be split into array elements) but okay in my case. >> > >> > In fairness to the others, I should have explained that I was okay with >> > replacing the old string with a new string. >> >> Did my solution work for you? >> >> str = str.first >> >> This way you avoid the intermediate array. >> >> Jesus. >> >> > I tried it on 1.8.6, 1.8.7, 1.9.1, 1.9.2, and found that it only worked on > 1.8.7 Yep, that's what I tested. Jesus.