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/*
* Copyright 2018 Allan Wang
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package ca.allanwang.kau.kotlin
/**
* Created by Allan Wang on 2017-08-05.
*/
/**
* Replica of [java.util.Vector.removeIf] in Java
* Since we don't have access to the internals of our extended class,
* We will simply iterate and remove when the filter returns {@code false}
*/
@Synchronized
inline fun <T, C : MutableIterable<T>> C.kauRemoveIf(filter: (item: T) -> Boolean): C {
val iter = iterator()
while (iter.hasNext())
if (filter(iter.next())) iter.remove()
return this
}
/**
* Returns the first element tha matches the predicate,
* or null if no match is found
*/
inline fun <T : Any> Iterator<T>.firstOrNull(predicate: (T) -> Boolean): T? {
while (hasNext()) {
val data = next()
if (predicate(data)) return data
}
return null
}
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