Why is enumerating over List faster than IList?
Read OriginalThis technical article analyzes a C# performance benchmark showing that enumerating a List<T> is significantly faster than enumerating an IList<T>. It explains the two main reasons: the IList<T> enumerator causes a 40-byte allocation due to boxing of a struct, and the virtual method calls required for the interface dispatch add further overhead compared to direct calls on the concrete List<T> type.
0 comments
Comments
No comments yet
Be the first to share your thoughts!
Browser Extension
Get instant access to AllDevBlogs from your browser
Top of the Week
1
Webinar Series – SQL Server Indexing
Koen Verbeeck
•
1 votes
2
Risks and Limitations of AI in the Life Sciences
Jeremy Howard
•
1 votes
3
1M context is now generally available for Opus 4.6 and Sonnet 4.6
Simon Willison
•
1 votes
4
AI is my CMS
Chris Coyier
•
1 votes
5
When your coding agent doesn’t understand your project, you’ll get junk
Benjamin Cane
•
1 votes
6
LLM Use in the Python Source Code
Miguel Grinberg
•
1 votes