What's does this double @ sign syntax mean after END

Detlef_R · November 12, 2013, 9:46am

Hi, list

I’m wondering what does double @ sign after END syntax meaning like
in
this file1

single file sinatra app really impressed me

–
Silence is golden.

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AR_Saka_AleiPhoenix · November 12, 2013, 10:06am

Hello,

On 12 Νοε 2013, at 09:44 , AR (aka AleiPhoenix) [email protected]
wrote:

Hi, list

I’m wondering what does double @ sign after END syntax meaning like in this
file[1]

Generally speaking it’s a class variable.

In this context (sinatra classic) @@index marks the index HTML page
structure in ‘erb’ (note line 12… erb :index) which you will see when
you access the ‘index.html’ page.

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AR_Saka_AleiPhoenix · November 12, 2013, 12:23pm

Sinatra does a little bit of magic there.

You probably know that in Ruby the content after an END token is
available via the DATA filehandle… as long as you are in the main file
passed to Ruby to execute.

Sinatra extends this idea to other files to offer inline templates,
processing END by hand:

github.com

sinatra/sinatra/blob/main/lib/sinatra/base.rb#L1267


      
            end
            return false unless key.respond_to?(:superclass) && (key.superclass < Exception)
          
          
  error_block!(key.superclass, *block_params)
          end
          
          
def dump_errors!(boom)
            msg = ["#{Time.now.strftime('%Y-%m-%d %H:%M:%S')} - #{boom.class} - #{boom.message}:", *boom.backtrace].join("\n\t")
            @env['rack.errors'].puts(msg)
          end
          
          
class << self
            CALLERS_TO_IGNORE = [ # :nodoc:
              %r{/sinatra(/(base|main|show_exceptions))?\.rb$},   # all sinatra code
              %r{lib/tilt.*\.rb$},                                # all tilt code
              /^\(.*\)$/,                                         # generated code
              %r{rubygems/(custom|core_ext/kernel)_require\.rb$}, # rubygems require hacks
              /active_support/,                                   # active_support require hacks
              %r{bundler(/(?:runtime|inline))?\.rb},              # bundler require hacks
              /<internal:/,                                       # internal in ruby >= 1.9.2
              %r{zeitwerk/kernel\.rb}                             # Zeitwerk kernel#require decorator

Then, it evaluates the text accordingly.

What's does this double @ sign syntax mean after __END__

What's does this double @ sign syntax mean after END