readium-shared/org.readium.r2.shared.util/MapCompanion

MapCompanion

open class MapCompanion<K, E>(map: Map<K, E>)

Encapsulates a Map into a more limited query API.

This is most useful as an Enum companion, to provide parsing of raw values.

enum class Layout(val value: String) {
    PAGINATED("paginated"),
    REFLOWABLE("reflowable");

    companion object : KeyMapper<String, Layout>(values(), Layout::value)
}

val layout: Layout? = Layout("reflowable")

Inheritors

Companion

MapWithDefaultCompanion

Constructors

MapCompanion

constructor(map: Map<K, E>)

constructor(elements: Array<E>, keySelector: (E) -> K)

Properties

keys

val keys: Set<K>

Returns the available keys.

Functions

get

open fun get(key: K?): E?

Returns the element matching the key, or null if not found.

invoke

open operator fun invoke(key: K?): E?

Alias to get, to be used like keyMapper("a_key").