How to compile Ruby?

Question

Is there a tool that can allow me to compile Ruby code so that it runs somewhat faster?

For example, I have heard that there is a tool for Python called \"pyc\" tha

Answer 1

From ruby 2.3.0 its so easy to compile your source code to bytecodes that the Ruby-VM understands.

byte_code = RubyVM::InstructionSequence.compile_file '/home/john/somefile.rb'

File.binwrite '/home/john/bytecode', byte_code.to_binary

and in Command Line

$ cat bytecode 

YARB�
IUsx86_64-linux*.*1

+1�!AA*1
!qy��������yyQ� E/home/john/somefile.rbE
E EshivaEhelloEAEputsEcore#define_methodu����� 5M

The content of the file

class A
  def shiva
    puts 'hello'
  end
end

What is the purpose?

Well, ruby takes time to compile your source code into byte codes so you can load your bytecodes directly into ruby and execute. No overhead of grammar checking and compilation. It much faster than normal processes.

How to load byte code?

bytecode = File.binread('/home/john/bytecode')
instruction_from_byte_code = RubyVM::InstructionSequence.load_from_binary bytecode

instruction_from_byte_code.eval
# => :shiva

Note: This answer is tested in MRI only. It might or might not work in other Ruby Implementations