label

        # RubyVM::InstructionSequence.label

(from ruby core)
### Implementation from InstructionSequence
---
    label()

---

Returns the label of this instruction sequence.

`<main>` if it's at the top level, `<compiled>` if it was evaluated from
a string.

For example, using irb:

    iseq = RubyVM::InstructionSequence.compile('num = 1 + 2')
    #=> <RubyVM::InstructionSequence:<compiled>@<compiled>>
    iseq.label
    #=> "<compiled>"

Using ::compile_file:

    # /tmp/method.rb
    def hello
      puts "hello, world"
    end

    # in irb
    > iseq = RubyVM::InstructionSequence.compile_file('/tmp/method.rb')
    > iseq.label #=> <main>