Given a sorted list of source data items (currentItems), and a sorted list of resources: For each source item that doesn't have a matching resource, attempt to create a resource. For each resource that doesn't have a matching source item, destroy that resource. For each source item with a matching resource, update the resource.

Declaration

public static void Sync<ItemType, ResourceType>(IReadOnlyList<ItemType> currentItems, List<ResourceType> resources, ResourceMirror.CompareToResource<ItemType, ResourceType> compareIds, ResourceMirror.CreateResource<ItemType, ResourceType> creator, ResourceMirror.UpdateResource<ItemType, ResourceType> updater, ResourceMirror.DestroyResource<ResourceType> destroyer)

Parameters

Type	Name	Description
IReadOnlyList<ItemType>	currentItems	List of current source items.
List<ResourceType>	resources	List of resources to by synced to currentItems.
ResourceMirror.CompareToResource<ItemType, ResourceType>	compareIds	Function to compare an item with a resource. See above.
ResourceMirror.CreateResource<ItemType, ResourceType>	creator	Callback to create a missing resource. See above.
ResourceMirror.UpdateResource<ItemType, ResourceType>	updater	Callback to update an existing resource. See above.
ResourceMirror.DestroyResource<ResourceType>	destroyer	Callback to destroy a resource which no longer has a matching source item.

Type Parameters

Name	Description
ItemType	Type of source items.
ResourceType	Type of resources.

Remarks

After this Sync, the list of resources will have exactly one resource for each item in currentItems, and currentItems and resources will be the same length. The exception is if the creator function returns false for any item(s), then those item(s) will not have matching resources, and resources will be shorter than currentItems. In any case, resources will remain sorted. Sync completes in a single pass over the data, so in O(max(currentItems.Count, resources.Count)) time.