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Rise of the State Machines

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State Machine Head

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Florence and the State Machine

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Welcome to the State Machine

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OFF

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ON

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OFF ON switch on switch off

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OFF ON switch on switch off

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OFF ON switch on switch off

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https://github.com/kanawish/android-mvi-sample "

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https://github.com/kanawish/android-mvi-sample #

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https://github.com/kanawish/android-mvi-sample # Model Intent View

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IDLE PROCESS ERROR refresh check task success failed

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sealed class SyncState { object IDLE : SyncState() { override fun toString(): String = "IDLE" } data class PROCESS(val type: Type) : SyncState() { enum class Type { REFRESH, CHECK } } data class ERROR(val throwable: Throwable) : SyncState() } IDLE PROCESS ERROR refresh check task success failed

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sealed class SyncState { object IDLE : SyncState() { override fun toString(): String = "IDLE" } data class PROCESS(val type: Type) : SyncState() { enum class Type { REFRESH, CHECK } } data class ERROR(val throwable: Throwable) : SyncState() } IDLE PROCESS ERROR refresh check task success failed

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Model ModelState store

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Model ModelState store «data class» TasksModelState tasks: List

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Model ModelState store «data class» TasksModelState tasks: List Task id: String lastUpdate: Long title: String description: String completed: Boolean tasks

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«data class» TasksModelState tasks: List Model ModelState store Task id: String lastUpdate: Long title: String description: String completed: Boolean tasks «sealed class» SyncState Idle() Process(type) Error(details) syncState syncState: SyncState

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«data class» TasksModelState tasks: List Model ModelState store Task id: String lastUpdate: Long title: String description: String completed: Boolean tasks «sealed class» SyncState Idle() Process(type) Error(details) syncState syncState: SyncState

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«data class» TasksModelState tasks: List Model ModelState store Task id: String lastUpdate: Long title: String description: String completed: Boolean tasks «sealed class» SyncState Idle() Process(type) Error(details) syncState syncState: SyncState IDLE PROCESS ERROR refresh check task success failed

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Live demo

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Live demo

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CLOSED EDITING task error? SAVING task DELETING taskId addTask() editTask() cancel() edit() save() error(msg) delete() error(msg) deleted() saved()

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Live demo

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Live demo