this post was submitted on 28 Apr 2024
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Explain yourselves, comp sci. (mander.xyz)
submitted 3 months ago by [email protected] to c/[email protected]
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[–] [email protected] 7 points 3 months ago* (last edited 3 months ago)

Which is why you should:

  1. Preallocate the vector if you can guesstimate the size
  2. Use a vector library that won't reallocate the entire vector on every single addition (like Rust, whose Vec doubles in size every time it runs out of space)

Memory is fairly cheap. Allocation time not so much.