I think you've got to distinguish newlines from other whitespace.
In the ruby I have handy (1.8.6), you can put whitespace all over the
place before and after the dot. You can put a newline after a dot;
the dot tells ruby there's more to come on the next line. But if you
put the newline before the dot, Ruby will think the previous line is
complete, and won't know what to do with the dot when it appears on
the next line
"foo".
split("")
is fine;
"foo"
.split("")
is not.
The same is true of other operators:
3 +
3
works fine;
3
+ 3
doesn't work.
On May 18, 2009, at 12:19 AM, Roy Wright wrote:
Sarah Allen wrote:
So, in Ruby 2.0, the dot works like any other operator and can have
whitespace/newlines before or after, but right now Ruby arbitrarily
(because it wants to conform to English sentences?) does not allow
whitespace before it, but does allow whitespace after?
Have I got that right?
On May 17, 2009, at 11:45 AM, Devyn Cairns wrote:
Yeah, I agree, I don't usually use spaces for that.
I can't wait for Ruby 2.0 to be stable, 'cause then I can do this:
"hello world"
.sub('he', 'goo')
.sub('l', 'd')
.sub('lo', 'bye')
#=> "goodbye world"
with long chains of message passing.
That's what it looks like...
r...@royw-gentoo ~ $ ruby18 --version
ruby 1.8.7 (2009-04-08 patchlevel 160) [i686-linux]
r...@royw-gentoo ~ $ ruby19 --version
ruby 1.9.1p0 (2009-01-30 revision 21907) [i686-linux]
r...@royw-gentoo ~ $ cat t.rb
#!/usr/bin/env ruby
puts 'hello world'
.sub('he', 'goo')
. sub('l', 'd')
.
sub('lo', 'bye')
r...@royw-gentoo ~ $ ruby18 t.rb
t.rb:4: syntax error, unexpected '.', expecting $end
.sub('he', 'goo')
^
r...@royw-gentoo ~ $ ruby19 t.rb
goodbye world
