[Proposal] Cache local configs when the argument is frozen

[saverio-kantox]

Often, the local config is used in several parts of an application. For example:

NY_OFFICE_CONFIG = {
  holidays: ['2017-07-04'],
  end_of_working_day: '17:00'
}.freeze

ABU_DHABI_OFFICE_CONFIG = {
  holidays: ['2017-08-08'],
  work_week: %w(sun mon tue wed thu)
}.freeze

BusinessDays::Config.with(NY_OFFICE_CONFIG) { 3.business_hours.from_now }
BusinessDays::Config.with(ABU_DHABI_OFFICE_CONFIG) { 4.business_days.ago }

Clearly, continually creating and destroying the local configs could be avoided, if the generated configs were cached. If the same frozen object is passed again, one could reuse the previous local config.

I can do that if you are interested.

[AdnanTheExcellent]

I am very interested in a feature of namespacing configs. we have different business hours and holidays between our customer service department and our production department, and namespaced business time configs would fix that problem.

[saverio-kantox]

@AdnanTheExcellent it is already possible using exactly the syntax I wrote above. Still I would like to address the garbage issue, when one has to switch often (or by user) between different configs.