What's about Rational::compatible and Complex::compatible?

Ruby
1

Hi,

can anybody explain the existence of (sub)classes mentioned in the
subject ?

There is:

  • documentation missing
    http://ruby-doc.org/core/Rational/compatible.html
    http://ruby-doc.org/core/Complex/compatible.html

  • identifier break class/constant naming rule, it should start with an
    uppercase

  • are inaccessible by standard ways although their existence is
    registered
    Rational::constants false # [:compatible]
    Rational::compatible # NoMethodError: undefined method `compatible’
    for Rational:Class
    Rational::const_get ‘compatible’ # NameError: wrong constant name
    compatible

Thanks.

2

For some another curious individuals, the question was already answered
on SO:

3

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