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* XRPLF/develop: chore: Run clang_tidy_check with `pass_filenames: false` from pre-commit (7800) feat: Add delegate filter param for account_tx RPC (6126) refactor: Move `jss.h` `include` out of `Indexes.h` (7799) test: Add tests for check doxygen style (7795) style: Add pre-commit hook to check doxygen style (7794) style: Unify style for all Doxygen comments (7776) fix: Improve Number addition/subtraction rounding (7369) feat: XLS-68: Sponsor, 5887 continuation (7350)
Basics
Utility functions and classes.
The module xrpl/basics should contain no dependencies on other modules.
Choosing an xrpld container.
-
std::vector- For ordered containers with most insertions or erases at the end.
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std::deque- For ordered containers with most insertions or erases at the start or end.
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std::list- For ordered containers with inserts and erases to the middle.
- For containers with iterators stable over insert and erase.
- Generally slower and bigger than
std::vectororstd::dequeexcept for those cases.
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std::set- For sorted containers.
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xrpl::hash_set- Where inserts and contains need to be O(1).
- For "small" sets,
std::setmight be faster and smaller.
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xrpl::hardened_hash_set- For data sets where the key could be manipulated by an attacker in an attempt to mount an algorithmic complexity attack: see http://en.wikipedia.org/wiki/Algorithmic_complexity_attack
The following container is deprecated
std::unordered_set- Use
xrpl::hash_setinstead, which uses a better hashing algorithm. - Or use
xrpl::hardened_hash_setto prevent algorithmic complexity attacks.