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10 lines
312 B
Kotlin
10 lines
312 B
Kotlin
package com.smallhacker.util
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typealias MultiMap<K, V> = Map<K, List<V>>
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typealias MutableMultiMap<K, V> = MutableMap<K, MutableList<V>>
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fun <K, V> mutableMultiMap(): MutableMultiMap<K, V> = HashMap()
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fun <K, V> MutableMultiMap<K, V>.putSingle(key: K, value: V) {
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getOrPut(key) { ArrayList() }.add(value)
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} |