PCRE - Perl-compatible regular expressions

       This  function  studies  a compiled pattern, to see if additional information can be extracted that might
       speed up matching. Its arguments are:

         code       A compiled regular expression
         options    Options for pcre[16|32]_study()errptr     Where to put an error message

       If  the  function  succeeds,  it  returns  a  value  that  can  be  passed   to   pcre[16|32]_exec()   or
       pcre[16|32]_dfa_exec() via their extra arguments.

       If the function returns NULL, either it could not find any additional information, or there was an error.
       You can tell the difference by looking at the error value. It is NULL in first case.

       The  only option is PCRE_STUDY_JIT_COMPILE. It requests just-in-time compilation if possible. If PCRE has
       been compiled without JIT support, this option is ignored. See the pcrejit page for further details.

       There is a complete description of the PCRE native API in the pcreapi page and a description of the POSIX
       API in the pcreposix page.

PCRE 8.30                                          24 June 2012                                    PCRE_STUDY(3)

       PCRE - Perl-compatible regular expressions

#include<pcre.h>pcre_extra*pcre_study(constpcre*code,intoptions,constchar**errptr);pcre16_extra*pcre16_study(constpcre16*code,intoptions,constchar**errptr);pcre32_extra*pcre32_study(constpcre32*code,intoptions,constchar**errptr);