Code Inspection: Use collection expression syntax

Collection expressions, introduced in C#12, provide a more concise syntax for collection initializations. Therefore, JetBrains Rider suggests using this syntax instead of the legacy collection initializer syntax:

List<string> numbers = new List<string> {"one", "two"};

List<string> numbers = ["one", "two"];

If the collection initializer is immediately followed by Add() calls on the collection, the quick-fix will also integrate these calls into the collection expression:

            
List<string> numbers =
    new() { "one", "two" };
numbers.Add("three");
numbers.Add("four");

            
List<string> numbers =
[
    "one",
    "two",
    "three",
    "four"
];

        

Last modified: 21 March 2024