Remove data from list while iterating kotlin

It's forbidden to modify a collection through its interface while iterating over it. The only way to mutate the collection contents is to use Iterator.remove.

However using Iterators can be unwieldy and in vast majority of cases it's better to treat the collections as immutable which Kotlin encourages. You can use a filter to create a new collections like so:

listTotal = listTotal.filterIndexed { ix, element ->
    ix != 0 && ix != listTotal.lastIndex && element.header == paymentsAndTagsModel.tagName
}

use removeAll

pushList?.removeAll {  TimeUnit.MILLISECONDS.toMinutes(
      System.currentTimeMillis() - it.date) > THRESHOLD }

val numbers = mutableListOf(1,2,3,4,5,6)
val numberIterator = numbers.iterator()
while (numberIterator.hasNext()) {
    val integer = numberIterator.next()
    if (integer < 3) {
        numberIterator.remove()
    }
}