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Within LTS Haskell 8.20 (ghc-8.0.2)

  1. waction :: (FormInput view, Monad m) => View view m a -> (a -> FlowM view m b) -> View view m b

    MFlow MFlow.Forms

    Actions are callbacks that are executed when a widget is validated. A action may be a complete flow in the flowM monad. It takes complete control of the navigation while it is executed. At the end it return the result to the caller and display the original calling page. It is useful when the widget is inside widget containers that may treat it as a black box. It returns a result that can be significant or, else, be ignored with <** and **>. An action may or may not initiate his own dialog with the user via ask

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