Line Comments in Ruby?
我如何评论Ruby中的多行？
#!/usr/bin/env ruby
=begin
Every body mentioned this way
to have multiline comments.
The =begin and =end must be at the beginning of the line or
it will be a syntax error.
=end
puts "Hello world!"
<<-DOC
Also, you could create a docstring.
which...
DOC
puts "Hello world!"
"..is kinda ugly and creates
a String instance, but I know one guy
with a Smalltalk background, who
does this."
puts "Hello world!"
##
# most
# people
# do
# this
__END__
But all forgot there is another option.
Only at the end of a file, of course.
=begin
My
multiline
comment
here
=end
Despite the existence of =begin and =end , the normal and a more correct way to comment is to use # 's on each line. If you read the source of any ruby library, you will see that this is the way multi-line comments are done in almost all cases.
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