C# - Compare one string variables to multiple other string (String.Equals)

Question

Do you have an idea to avoid doing multiple String.Equals? For instance:

if (interSubDir.Equals("de") || interSubDir.Equals("de-DE"))

Thanks!

Answer 1

Create collection of values:

string[] values = { "de", "de-DE" };

Use Contains method:

if (values.Contains(interSubDir))

It gives O(n) performance.

If your collection is very big, then you can use Array.BinarySearch method, that gives you O(log n) performance.

if (Array.BinarySearch(values, interSubDir) >= 0)

However, the collection must be sorted first.

Array.Sort(values);