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41 lines
1.2 KiB
Markdown
41 lines
1.2 KiB
Markdown
# Basics
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Utility functions and classes.
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ripple/basic should contain no dependencies on other modules.
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Choosing a rippled container.
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=============================
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* `std::vector`
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* For ordered containers with most insertions or erases at the end.
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* `std::deque`
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* For ordered containers with most insertions or erases at the start or end.
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* `std::list`
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* For ordered containers with inserts and erases to the middle.
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* For containers with iterators stable over insert and erase.
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* Generally slower and bigger than `std::vector` or `std::deque` except for
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those cases.
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* `std::set`
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* For sorted containers.
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* `ripple::hash_set`
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* Where inserts and contains need to be O(1).
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* For "small" sets, `std::set` might be faster and smaller.
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* `ripple::hardened_hash_set`
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* For data sets where the key could be manipulated by an attacker
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in an attempt to mount an algorithmic complexity attack: see
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http://en.wikipedia.org/wiki/Algorithmic_complexity_attack
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The following container is deprecated
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* `std::unordered_set`
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* Use `ripple::hash_set` instead, which uses a better hashing algorithm.
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* Or use `ripple::hardened_hash_set` to prevent algorithmic complexity attacks.
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