Linq WHERE condition internal work

Question

If Linq uses a "for or while" loop internally for the where clause, Why should we not use it directly?

Tuhin Paul · Answer

Using LINQ often results in more concise and declarative code. For example var evenNumbers = numbers.Where(n => n % 2 == 0); This is easier to read and understand compared to: var evenNumbers = new List (); foreach (var n in numbers) { if (n % 2 == 0) { evenNumbers.Add(n); } } When using for or while loops directly, you need to manually handle iteration, conditional checks, and modifications to the collection, which can lead to common errors like off-by-one errors, skipping items, or modifying collections during enumeration. LINQ communicates what you want to do, while loops communicate how to do it. This high-level abstraction makes LINQ easier to understand at a glance.

Tuhin Paul · Answer

While LINQ is a powerful tool, there are cases where manual loops might be more suitable: In extremely performance-critical code, manual loops might be faster due to the overhead of LINQ. When the business logic is complex and involves multiple steps, manual loops might be easier to understand and maintain. Manual loops can be easier to debug, as the execution flow is more straightforward.

Linq WHERE condition internal work

Answers (2)