46 lines
1.2 KiB
Kotlin
46 lines
1.2 KiB
Kotlin
package org.mariotaku.ktextension
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/**
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* Created by mariotaku on 2016/12/24.
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*/
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fun Collection<*>?.isNotNullOrEmpty(): Boolean {
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return this != null && this.isNotEmpty()
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}
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fun Collection<*>?.isNullOrEmpty(): Boolean {
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return this == null || this.isEmpty()
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}
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fun <T> MutableCollection<T>.addAllEnhanced(collection: Collection<T>, ignoreDuplicates: Boolean): Boolean {
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if (ignoreDuplicates) {
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return addAll(collection.filter { it !in this })
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} else {
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return addAll(collection)
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}
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}
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fun <T> Collection<T>.addAllTo(collection: MutableCollection<T>): Boolean {
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return collection.addAll(this)
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}
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fun <E> Collection<E>?.nullableContentEquals(other: Collection<E>?): Boolean {
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if (this == null) return other.isNullOrEmpty()
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return contentEquals(other!!)
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}
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fun <E> Collection<E>.contentEquals(other: Collection<E>): Boolean {
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if (this === other) return true
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if (this.size != other.size) return false
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return this.containsAll(other) && other.containsAll(this)
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}
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inline fun <reified T> List<T>.subArray(range: IntRange): Array<T> {
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return Array(range.count()) {
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this[range.start + it]
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}
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}
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fun <T> T.addTo(collection: MutableCollection<T>): Boolean {
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return collection.add(this)
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} |