Difficulty: Easy
Correct Answer: Yes
Explanation:
Introduction / Context:
The .NET runtime manages memory automatically via a garbage collector. Developers sometimes wonder whether they can force a collection for testing or diagnostics, and what the implications are.
Given Data / Assumptions:
Concept / Approach:
.NET exposes APIs such as GC.Collect()
, GC.GetTotalMemory(...)
, and GC.WaitForPendingFinalizers()
. Calling GC.Collect()
requests that the runtime perform a collection across generations, though the GC retains ultimate control. Explicit collection is generally discouraged in production because it can hurt performance and disrupt generational heuristics.
Step-by-Step Solution:
GC.Collect()
exists and is callable.2) Understand that it is a request; timing and exact impact are runtime-managed.3) Prefer letting the GC run automatically unless you have a measured scenario (e.g., large object graph release before going idle).
Verification / Alternative check:
Create a small test harness, allocate objects, call GC.Collect()
, and observe memory/free lists via diagnostic tools.
Why Other Options Are Wrong:
Common Pitfalls:
Misusing explicit collections can increase pause times and degrade throughput; rely on profiling before forcing collections.
Final Answer:
Yes
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