/// <summary>
/// Retrieve a member of the contaner by index.
/// </summary>
/// <param name="index">The zero-based index into the list.</param>
/// <value>The list item at the specified index.</value>
/// <exception cref="IndexOutOfRangeException">Thrown if index is negative or >= to <see cref="Length"/>.</exception>
public T this[int index]
{
get
{
#if ENABLE_UNITY_COLLECTIONS_CHECKS
AtomicSafetyHandle.CheckReadAndThrow(m_Safety);
#endif
CheckIndexInRange(index, m_ListData->Length);
return UnsafeUtility.ReadArrayElement<T>(m_ListData->Ptr, CollectionHelper.AssumePositive(index));
}
set
{
#if ENABLE_UNITY_COLLECTIONS_CHECKS
AtomicSafetyHandle.CheckWriteAndThrow(m_Safety);
#endif
CheckIndexInRange(index, m_ListData->Length);
UnsafeUtility.WriteArrayElement(m_ListData->Ptr, CollectionHelper.AssumePositive(index), value);
}
}
/// <summary>
/// Adds elements from a buffer to this list.
/// </summary>
/// <typeparam name="T">Source type of elements</typeparam>
/// <param name="ptr">A pointer to the buffer.</param>
/// <param name="length">The number of elements to add to the list.</param>
/// <remarks>
/// If the list has reached its current capacity, internal array won't be resized, and exception will be thrown.
/// </remarks>
/// <exception cref="ArgumentOutOfRangeException">Thrown if length is negative.</exception>
public void AddRangeNoResize(void *ptr, int length)
{
CheckArgPositive(length);
AddRangeNoResize(UnsafeUtility.SizeOf <T>(), UnsafeUtility.AlignOf <T>(), ptr, CollectionHelper.AssumePositive(length));
}
/// <summary>
/// Truncates the list by replacing the item at the specified index range with the items from the end the list. The list
/// is shortened by number of elements in range.
/// </summary>
/// <typeparam name="T">Source type of elements</typeparam>
/// <param name="begin">The first index of the item to remove.</param>
/// <param name="end">The index past-the-last item to remove.</param>
public void RemoveRangeSwapBack(int begin, int end)
{
#if ENABLE_UNITY_COLLECTIONS_CHECKS
AtomicSafetyHandle.CheckWriteAndBumpSecondaryVersion(m_Safety);
#endif
m_ListData->RemoveRangeSwapBack <T>(CollectionHelper.AssumePositive(begin), CollectionHelper.AssumePositive(end));
}
