![]() You may need them for optimizing regex perfomance/size of generated code/memory usage, mostly relevant for embedded systems or high perfomance specific applications. ![]() For C++ they are above mentioned Boost and STL C++0x11 implementations. It was rated one of the best plays ever watched at the Harare International Festival of the Arts 2014 and it continues to mesmerise audiences. CTR can be implemented through meta-programming and/or code generation.Īs for specific implementations - there are many RTR, but not so numerous CTR. Written by Tawanda Mutero Kanengoni and directed by Leeroy Gono, the play was produced by Xpressive Arts and has received excellent reviews both at home and abroad. Another advantage is compile-time syntax checking. This multi-arts approach uses our innate desire to create - via play, art, music, dance, poetry or any other artistic form - as a therapeutic tool to help. RTR are "compiled" and interpreted by some kind of universal finite state machine(universal means its kind of interpreter which scheme is given at run-time, "compiled" in some internal data structure - when you pass regex string, then interpreted at run-time).īut CTR is "compiled" at compile-time and are specific for particular regex, so you can't use them, when regex is given at run-time(applications like text editors, file/internet search engines).īut they are a priori more efficient(theoretically however) as customized in compile-time finite state machine will be efficient, than interpreter with table-preset scheme of this machine(some similar cases are reflection field access vs compile-time access, or specialized function optimized for some fixed parameter as pointed out there). They are OK when regular expression is determined at run-time, unlike CTR. Run-time regex are more known and popular(most language core-libraries implementations), i suppose due to historical reasons. ![]() ![]() I would try to supplement other people answers by get deeper into topic of compile-time regular expressions(CTR) vs run-time(dynamic) regular expressions(RTR) in a more theoretical way(this topic is implied by OP question indirectly IMHO). ![]()
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