tlx is a collection of C++ helpers and extensions universally needed, but not found in the STL.The most important design goals and conventions are:

• high modularity with as little dependencies between modules as possible.
• attempt to never break existing interfaces.
• compile on all platforms with C++ – smartphones, supercomputers, windows, etc.
• zero external dependencies: no additional libraries are required.
• warning and bug-freeness on all compilers.
• keep overhead down – small overall size such that is can be included without bloating applications.

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• CountingPtr – an intrusive reference counting pointer
• die() - Simple Invariant Testing : die(), die_unless(), die_if(), die_unequal().
• logger.hpp : LOG, LOG1, LOGC, sLOG.
• Miscellaneous: unused(), vector_free().
• Algorithms : merge_combine(), exclusive_scan(), multiway_merge(), parallel_multiway_merge(), multisequence_selection(), multisequence_partition().
• Data Structures : RingBuffer, SimpleVector, B+ Trees, Loser Trees, RadixHeap, (Addressable) D-Ary Heap
• Defines and Macros : TLX_LIKELY, TLX_UNLIKELY, TLX_ATTRIBUTE_PACKED, TLX_ATTRIBUTE_ALWAYS_INLINE, TLX_ATTRIBUTE_FORMAT_PRINTF, TLX_DEPRECATED_FUNC_DEF.
• Message Digests : MD5, md5_hex(), SHA1, sha1_hex(), SHA256, sha256_hex(), SHA512, sha512_hex().
• Math Functions : integer_log2_floor(), is_power_of_two(), round_up_to_power_of_two(), round_down_to_power_of_two(), ffs(), clz(), abs_diff(), bswap32(), bswap64(), popcount(), Aggregate, PolynomialRegression.
• String Algorithms : starts_with(), ends_with(), contains(), contains_word(), trim(), replace_all(), erase_all(), join(), split(), split_words(), union_words(), split_quoted(), join_quoted(), to_lower(), hexdump(), word_wrap(), escape_html(), parse_si_iec_units(), format_iec_units(), ssprintf(), expand_environment_variables(), levenshtein(), hash_djb2(), hash_sdbm().
• Meta-Template Programming : call_foreach(), apply_tuple(), vmap_foreach(), Log2Floor, FunctionChain, FunctionStack, is_std_pair, is_std_tuple, is_std_vector, is_std_array, TLX_MAKE_HAS_MEMBER.
• Sorting Algorithms : sort_strings() (using radix sort and multikey quicksort), parallel_mergesort() (experimental parallel mergesort from MCSTL).
• Backtrace Printing : print_cxx_backtrace().
• Command Line Parsing : CmdlineParser.
• Fast Delegates : Delegate - a better std::function<> replacement.
• SipHash : simple string hashing siphash()
• StackAllocator : stack-local allocations
• Threading : ThreadPool, Semaphore.