C# 7 and .NET Core 2.0 High Performance

Lists

Lists are extensively used by .NET developers. Although it is preferable to use it in many scenarios, there are some performance limitations, too.

Using lists is mostly advisable when you want to access the item using its index. Unlike a linked list, where you have to iterate over each node using an enumerator to search for the item, with a list, we can easily access it using an index.

Here are few recommendations where lists are useful:

• It is recommended that you use list when the collection size is not known. Resizing arrays is an expensive operation, and with lists we can easily grow the size of the collection by just adding to it as needed.
• Unlike arrays, lists do not reserve the total memory address space for the number of items ...