Choose efficient data structures and algorithms to minimize computational overhead and improve performance. This involves selecting appropriate containers based on usage patterns, avoiding unnecessary operations like redundant copies or conversions, and leveraging optimized library functions.
Choose efficient data structures and algorithms to minimize computational overhead and improve performance. This involves selecting appropriate containers based on usage patterns, avoiding unnecessary operations like redundant copies or conversions, and leveraging optimized library functions.
Key practices:
absl::flat_hash_map
instead of std::unordered_map
, or base::MakeFixedFlatSet
for compile-time known setsconst auto& item
) or range-based algorithmsbase::ranges::any_of
over custom implementationsstd::move
on temporary values that already have move semanticsExample of optimization:
// Less efficient - custom loop with copies
for (size_t i = 0; i < val.planes.size(); ++i) {
auto plane = val.planes[i]; // Unnecessary copy
// process plane...
}
// More efficient - range-based with references
for (const auto& plane : val.planes) {
// process plane...
}
// Even better - use library algorithms when applicable
auto v8_planes = base::ToVector(val.planes, [isolate](const auto& plane) {
// transform logic...
});
This approach reduces computational complexity, memory usage, and improves overall performance by making algorithmic choices that align with actual usage patterns.
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