[YANQ] -yet another (ruby) newbie question -string#concat

ruby-talk
1

Hi sir David (aka dblack@candle.superlink.net
[mailto:dblack@candle.superlink.net]):

You replied last Monday, December 09, 2002 10:43 AM:

Hello Ruby Friends,

From now on, I’ll prefix my questions w YANQ (yet another (ruby) newbie
question) so it would be easier for you to delete (in case :-).

ruby + newbie =3D=3D nuby :slight_smile:

ooops. Then that should be yet another nuby question. Many thanks, sir David
:slight_smile:

My YANQotd is regarding string#concat. A sample code and output would be
good to illustrate:

C:\family\ruby>type a1.rb
fn =3D “bot”
ln =3D “pen”
name =3D fn.concat(ln)

print "first name: ", fn
puts
print "last name : ", ln
puts
print "full name : ", name

C:\family\ruby>ruby a1.rb
first name: botpen
last name : pen
full name : botpen

I noticed that concat modified fn. I looked for other concat methods but
couldn’t find one (but the + op). I was hoping that there would be a
conc=
at!
and concat pair (like chop!/chop and chomp!/chomp).

Maybe string#concat! was deprecated for “+”? My concern is that (as a

String#concat is a synonym for String#<<, and since it modifies the
object, a concat! version wouldn’t make sense. You can indeed use
String#+ if you want to create a new string instead of modifying the
old one.

Yes, sir David, I’ll be using string#+ now.

newbie), I’m trying to avoid methods with “!” (like chomp!/chop!) so I
ha=
ve
less to worry/know. My strategy was working and I was actually coding w
breeze… until I bump… :frowning:

I think in the long run that strategy will give you more to worry
about :slight_smile: Don’t feel you have to avoid ! methods; they’re a normal
part of Ruby, and not particularly complicated.

I will try not avoiding ! methods later, sir David… Anyway, it’s just this
little bump that I tripped on :slight_smile:

David

Many thanks.

Kind regards,
-botp