hmn24 / kdb-c-library-apis

Regex Boost + Hashing API

kdb+/C++ Library APIs

Regex Boost API

1) Tutorials for learning how to use Regex Boost Library

https://medium.com/factory-mind/regex-tutorial-a-simple-cheatsheet-by-examples-649dc1c3f285

https://theboostcpplibraries.com/boost.regex

Discussions on issues with strdup:

https://stackoverflow.com/questions/12984948/why-is-strdup-considered-to-be-evil

Portability is an issue, with the following defined if compiled in VSC++ with Windows OS

// String copy, allows portability between Visual Studio C++ and UNIX compilers

#if defined(WIN32) || defined(_WIN32) #define strdup _strdup #endif

 
2) Installation Instructions

sudo apt-get install libboost-regex-dev

g++ -shared -fPIC regex.cpp -lboost_regex -o $QHOME/l64/regex.so

     

Hashing API

1) Tutorials for learning how to use Regex Boost Library

It can only accept strings/symbols. There are two flavours provided here in the repo, i.e. cppStdHash and cppMapHash. The former is part of the functional lib (i.e. faster though less collision-proof), while the latter from the unordered_map library that's usually used for building hash tables (i.e. likely more collision-proof).

 
2) Installation Instructions

g++ -shared -fPIC hash.cpp -o $QHOME/l64/hash.so

     

Identify Functions Under Shared Objects

Run the following example command:

nm -D --defined-only regex.so | grep -v _