Trait components::engine::d2::subsystem::StorageSystem

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pub trait StorageSystem {
    fn is_supported(&self) -> bool;
    fn set<A>(&self, key: String, value: A) -> bool
    where
        A: StorageItem;
    fn get<A>(&self, key: String) -> Option<&A>
    where
        A: StorageItem;
    fn remove(&mut self, key: String);
    fn clear(&mut self);
}

Expand description

A simple key/value store that persists between sessions.

Required Methods

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fn is_supported(&self) -> bool

True if the environment supports persisted storage. Otherwise, the storage is backed by a Map and not actually persisted between sessions.

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fn set<A>(&self, key: String, value: A) -> bool where
A: StorageItem,

Add a key to the storage, replacing any existing value. @param value An object that can be serialized with Serializer. @returns True if the value was successfully serialized and persisted.

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