Re: Ultimate Guide to Ruby Strings

X-Received	by 2002:a6b:1881:: with SMTP id 123-v6mr2865475ioy.8.1530807051676; Thu, 05 Jul 2018 09:10:51 -0700 (PDT)
X-Received	by 2002:aca:4787:: with SMTP id u129-v6mr1462246oia.4.1530807051536; Thu, 05 Jul 2018 09:10:51 -0700 (PDT)
Path	csiph.com!weretis.net!feeder6.news.weretis.net!feeder.usenetexpress.com!feeder-in1.iad1.usenetexpress.com!border1.nntp.dca1.giganews.com!nntp.giganews.com!d7-v6no2773506itj.0!news-out.google.com!l67-v6ni2805itl.0!nntp.google.com!u78-v6no2746129itb.0!postnews.google.com!glegroupsg2000goo.googlegroups.com!not-for-mail
Newsgroups	comp.lang.ruby
Date	Thu, 5 Jul 2018 09:10:51 -0700 (PDT)
In-Reply-To	<442165f5-c8c9-4273-8762-65a86a23bc5c@googlegroups.com>
Complaints-To	groups-abuse@google.com
Injection-Info	glegroupsg2000goo.googlegroups.com; posting-host=161.69.135.20; posting-account=MGO7qgoAAABvyo26eHVDO00044spH-ws
NNTP-Posting-Host	161.69.135.20
References	<442165f5-c8c9-4273-8762-65a86a23bc5c@googlegroups.com>
User-Agent	G2/1.0
MIME-Version	1.0
Message-ID	<7f511e6f-cadd-4048-b2b2-e153ca86eb64@googlegroups.com> (permalink)
Subject	Re: Ultimate Guide to Ruby Strings
From	Robert Klemme <shortcutter@googlemail.com>
Injection-Date	Thu, 05 Jul 2018 16:10:51 +0000
Content-Type	text/plain; charset="UTF-8"
Lines	41
Xref	csiph.com comp.lang.ruby:7395

Show key headers only | View raw

On Sunday, February 4, 2018 at 7:00:17 PM UTC+1, Jesus Castello wrote:
> Hello!
> I wrote an article about ruby string methods on my blog rubyguides.
> 
> You can read it here:
> 
> http://www.rubyguides.com/2018/01/ruby-string-methods/
> 
> Let me know what you think :)

Looks good.  Just a few minor nitpicks:

My preferred method to test whether a string represents a number is to actually convert it and deal with the error:

begin
  i = Integer(str)
  printf "%d\n", i
rescue ArgumentError
  puts "Oh, it's not a number!"
end

Or

i = Integer(str) rescue nil

if i ...



There is another way to extract a sub string:

substr = str[/fo+/]

and for replacing parts of the string:

str[/fo+/] = "bar"

(You'll get an IndexError if there is no match.)

Cheers

robert

Back to comp.lang.ruby | Previous | Next — Previous in thread | Find similar

Thread

Ultimate Guide to Ruby Strings Jesus Castello <matugm@gmail.com> - 2018-02-04 10:00 -0800
  Re: Ultimate Guide to Ruby Strings Fernando Basso <fernandobasso.br@gmail.com> - 2018-06-17 08:28 -0300
  Re: Ultimate Guide to Ruby Strings Robert Klemme <shortcutter@googlemail.com> - 2018-07-05 09:10 -0700

csiph-web