Class: Enum

Inherits:

Hash

• Object
• Hash
• Enum

Defined in:

lib/enum.rb

Instance Method Summary

• #[](k) ⇒ Integer or symbol

  Get index by symbol or get symbol by index.

• #[]=(k, v) ⇒ nil

  Change or add enum pair.

• #initialize(*members) ⇒ Enum constructor

  Create a new Enum instance.

Constructor Details

#initialize(*members) ⇒ Enum

Create a new Enum instance

Parameters:

• *members (Array of String) —

  list of strings becoming symbols

# File 'lib/enum.rb', line 7

def initialize(*members)
    super()
    @rev = {}
    members.each_with_index {|m,i| self[i] = m}
end

Instance Method Details

#[](k) ⇒ Integer or symbol

Get index by symbol or get symbol by index

Parameters:

• k (symbol or Integer)

Returns:

• (Integer or symbol)

# File 'lib/enum.rb', line 16

def [](k)
    super || @rev[k]
end

#[]=(k, v) ⇒ nil

Change or add enum pair

Parameters:

• k (String) —

  the symbol name

• v (Integer) —

  the index

Returns:

• (nil)

# File 'lib/enum.rb', line 24

def []=(k, v)
    @rev[v] = k
    super
end