[Solved] How do you correctly retrieve the first element or a default value from a list called items in C#? - Ans: var result = items.FirstOrDefault(); | C Sharp (C#)

C Sharp (C#) - LINQ Fundamentals

How do you correctly retrieve the first element or a default value from a list called items in C#?

Avar result = items.Single();

Bvar result = items.FirstOrDefault();

Cvar result = items.Last();

Dvar result = items.SingleOrDefault();

Step-by-Step Solution

Solution:

Step 1: Understand the method purpose
FirstOrDefault() returns the first element or default if none exists.
Step 2: Check alternatives
Single() expects exactly one element, Last() returns last element, SingleOrDefault() expects zero or one element.
Final Answer:
var result = items.FirstOrDefault(); -> Option B
Quick Check:
First element or default [OK]

Quick Trick: Use FirstOrDefault() to safely get first or default [OK]

Common Mistakes:

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How do you correctly retrieve the first element or a default value from a list called items in C#?