Home/ Questions/Q 8035629
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-05T02:21:50+00:00

Say that, in my method, I pass in a couple IEnumerables (probably because I’m

  • 0

Say that, in my method, I pass in a couple IEnumerables (probably because I’m going to get a bunch of objects from a db or something).

Then for each object in objects1, I want to pull out a diffobject from objects2 that has the same object.iD.

I don’t want multiple enumerations (according to resharper) so I could make objects2 into a dictionary keyed with object.iD. Then I only enumerate once for each. (secondary question)Is that a good pattern?

(primary question) What’s too big? At what point would this be a horrible pattern? How many objects is too many objects for the dictionary?

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    Internally, it would be prevented from ever having more than two billion items. Since the way things are positioned within a dictionary is fairly complicated, if I were looking at dealing with a billion items (if a 16-bit value, for example, then 2GB), I’d be looking to store them in a database and retrieve them using data-access code.

    I have to ask though, where are Objects1 and Objects2 coming from? It sounds as though you could do this at the DB level and it would be MUCH, MUCH more efficient than doing it in C#!

    You might also want to consider using KeyValuePair[]

    • 0