#rustcollections — Public Fediverse posts
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🔍 #Rustlang Tip: Use Vec::with_capacity(n) when you know the approximate size of your vector beforehand. This will reserve memory for the vector to avoid multiple allocations.
This is a performance optimization and shouldn't change the behavior of the code in most situations.
Be careful though, if you overestimate the size of the vector you will waste memory!