Long quotes on multiple lines

ruby-talk
1

Is there an idiomatic way to continue a long quote on a separate line,
or should I just do:

"If you need help," +
" please dial the operator"

···

--
Posted via http://www.ruby-forum.com/.

2

Robert James wrote:

Is there an idiomatic way to continue a long quote on a separate line,
or should I just do:

"If you need help," +
" please dial the operator"

--
Posted via http://www.ruby-forum.com/\.

"one \

two \
three"
=> "one two three"

3

Hi,

At Sun, 14 Jan 2007 14:20:54 +0900,
Robert James wrote in [ruby-talk:233900]:

Is there an idiomatic way to continue a long quote on a separate line,
or should I just do:

"If you need help," +
" please dial the operator"

# string literal concatenation
puts "If you need help," \
     " please dial the operator"

# escaping new lines
puts "If you need help,\
please dial the operator"

# ditto, with here doc
puts <<EOS
If you need help,\
please dial the operator
EOS

···

--
Nobu Nakada

4

Robert James wrote:

Is there an idiomatic way to continue a long quote on a separate line,
or should I just do:

"If you need help," +
" please dial the operator"

Hmm, I don't think you can..

if you do (which you can)

"If you need help
please dial the operator"

you'll get '\n' sneaked in there...

I think that using '+' is the only way. Now the question is if that
affects performance at all.. I wouldn't know.

···

--
Posted via http://www.ruby-forum.com/\.

5

Nobuyoshi Nakada wrote:

# string literal concatenation
puts "If you need help," \
     " please dial the operator"

Is this deprecated and planned for removal at some point? I seem to recall so.

···

--
        vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407

6

Alternative to escaping new lines is replacement:

irb(main):004:0> s="foo
irb(main):005:0" bar
irb(main):006:0" baz".gsub! "\n", ' '
=> "foo bar baz"
irb(main):007:0> s
=> "foo bar baz"

Of course, this is less efficient because it's done at runtime - but might be ok for constants.

This also works with heredocs.

  robert

···

On 14.01.2007 06:42, Nobuyoshi Nakada wrote:

Hi,

At Sun, 14 Jan 2007 14:20:54 +0900,
Robert James wrote in [ruby-talk:233900]:

Is there an idiomatic way to continue a long quote on a separate line,
or should I just do:

"If you need help," +
" please dial the operator"

# string literal concatenation
puts "If you need help," \
     " please dial the operator"

# escaping new lines
puts "If you need help,\
please dial the operator"

# ditto, with here doc
puts <<EOS
If you need help,\
please dial the operator
EOS

7

David Krmpotic wrote:

Robert James wrote:

Is there an idiomatic way to continue a long quote on a separate line,
or should I just do:

"If you need help," +
" please dial the operator"

Hmm, I don't think you can..

if you do (which you can)

"If you need help
please dial the operator"

you'll get '\n' sneaked in there...

I think that using '+' is the only way. Now the question is if that
affects performance at all.. I wouldn't know.

At a guess, I would say that using + means it has to go through
String#+. If you write something like

  class String
    alias old_plus :+
    def + other
      puts "adding strings "#{other}"
      old_plus other
    end
  end

On the other hand, if you use a lexical construct like

  "asdf asdf" \
  "asdf asdf"

Then the compiler probably does (or at least can do) literal string
concatenation at parse time.

···

--
Posted via http://www.ruby-forum.com/\.

8

Hi,

At Sun, 14 Jan 2007 14:55:31 +0900,
Joel VanderWerf wrote in [ruby-talk:233904]:

> # string literal concatenation
> puts "If you need help," \
> " please dial the operator"

Is this deprecated and planned for removal at some point? I seem to
recall so.

Maybe in the future, but it's not deprecated nor planned yet
right now, although Matz has mentioned about it somewhere.

And, the last one included a new line at the end.
Instead, another one:

# empty expression interpolation
p "If you need help,#{
} please dial the operator"

···

--
Nobu Nakada

9

Robert Klemme:

Alternative to escaping new lines is replacement:

irb(main):004:0> s="foo
irb(main):005:0" bar
irb(main):006:0" baz".gsub! "\n", ' '
=> "foo bar baz"
irb(main):007:0> s
=> "foo bar baz"

Also, if you like something fancy:

    require 'facet/string/margin'

    x = %Q{
          > This
          > is
          > margin controlled!
          }.margin

Regards, Kalman

10

ah ok, so this is the answer Robert was looking for:

   "asdf asdf" \
   "asdf asdf"

I didn't know how to do this either. Now I know. Cool

···

--
Posted via http://www.ruby-forum.com/.