Derivatives Versions Save

• To upgrade replace uses of the get! and release! functions with their pendants in org.martinklepsch.derivatives (same names) and pass the derivatives pool record that is now returned by derivatives-pool as first argument.
• Sorry for this breakage I hope it does not affect too many. :raised_hands:

New Feature Implement own derived-value that can be disposed, which will remove watches on sources (atoms or other watchable things) PR #2

New Feature Extend Rum drv mixin to accept multiple arguments PR #5 & PR #8. Previously you called d/drv multiple times:

  (rum/defcs block < rum/reactive (d/drv :product/page) (d/drv :product/images) (d/drv :product/text) 
    [state]
    (let [page (d/react state :product/page)
          images (d/react state :product/images)
          text (d/react state :product/text)] 
      ...))

Now it is possible to pass multiple keywords to the same function with the same result as multiple invocations. Also there is a new function react-all that can be used to dereference multiple or all known derivatives at once:

  (rum/defcs block < rum/reactive (d/drv :product/page :product/images :product/text)
    [state]
    (let [{:keys [:product/text]} (d/react-all state)]
      [:p text] ,,,))

  (d/react-all state) -> {:product/page 'val :product/images 'val :product/text 'val}
  (d/react-all state :product/page) -> {:product/page 'val}

Internal The sync-derivatives! function and the DerivativesPool constructor now receive an extra argument watch-key-prefix that helps avoiding conflicts when creating multiple pools from a single source atom with specs that have overlapping keys. See #10 for details.

Bugfix Fix wrong assumption in tests that would cause them to fail when a spec contains more complex keys: 37cda80

Bugfix Fix issue where sync-derivatives! would fail if spec keys don't implement IFn b5f9545