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Top Forums Shell Programming and Scripting Processing too slow with loop Post 302976155 by Corona688 on Friday 24th of June 2016 11:13:46 AM
Old 06-24-2016
It makes sense that "word regexp" and "fixed string" are mutually exclusive. I don't know what combining them would even mean.

Is the data file structured in any way? That could be useful.

You answered me, but didn't answer my question:

Quote:
Does performance actually get worse? Or does it just take 100,000x longer to process a 100,000x larger file? About how many matches are you expecting?
 

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shevek::regexp(3)					     Library Functions Manual						 shevek::regexp(3)

NAME
shevek::regexp - Use regular expressions. SYNOPSIS
#include <regexp.hh> Public Member Functions regexp (std::string const &pattern=std::string(), bool case_sensitive=false) Create a new object, and optionally fill it with a pattern. regexp & operator= (std::string const &pattern) Set a pattern, removing the previous one. regexp (regexp const &that) Copy a regexp. regexp & operator= (regexp const &that) Copy a regexp. void case_sensitive (bool value=true) Set whether the evaluation should be case sensitive. ~regexp () Destructor, this cleans up internal structures. bool operator() (std::string const &data) Check whether the pattern matches a string, and fill internal match structures if it does. std::string operator[] (unsigned idx) const Retrieve the value of a subexpression from the last matched string. bool valid (unsigned idx) const Test whether a subexpression was filled by the last matching string. unsigned size () const Get the number of subexpression. std::string transform (std::string const &data) const Transform a string with -codes according to the last matching string. std::string const & pattern () const Get the current pattern. Detailed Description Use regular expressions. Member Function Documentation std::string shevek::regexp::operator[] (unsignedidx) const Retrieve the value of a subexpression from the last matched string. This throws an exception if the subexpression is not valid. Author Generated automatically by Doxygen for libshevek from the source code. libshevek Fri May 11 2012 shevek::regexp(3)
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