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Top Forums Programming Regarding a GREAT site for understanding and Visualizing regex patterns. Post 303038840 by RavinderSingh13 on Sunday 15th of September 2019 11:20:43 AM
Old 09-15-2019
Regarding a GREAT site for understanding and Visualizing regex patterns.

Hello All,

While googling on regex I came across a site named Regulex Regulex:JavaScript Regular Expression Visualizer
I have written a simple regex ^(a|b|c)([^@]*)@(.*) and could see its visualization; one could export it too, following is the screen shot.

Image

It may help us for understanding regex expressions. I am also new to it and exploring it.

Thought to share on forums Smilie

Thanks,
R. Singh

Last edited by RavinderSingh13; 09-15-2019 at 12:30 PM..
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RE_COMP(3)						     Linux Programmer's Manual							RE_COMP(3)

NAME
re_comp, re_exec - BSD regex functions SYNOPSIS
#define _REGEX_RE_COMP #include <sys/types.h> #include <regex.h> char *re_comp(char *regex); int re_exec(char *string); DESCRIPTION
re_comp() is used to compile the null-terminated regular expression pointed to by regex. The compiled pattern occupies a static area, the pattern buffer, which is overwritten by subsequent use of re_comp(). If regex is NULL, no operation is performed and the pattern buffer's contents are not altered. re_exec() is used to assess whether the null-terminated string pointed to by string matches the previously compiled regex. RETURN VALUE
re_comp() returns NULL on successful compilation of regex otherwise it returns a pointer to an appropriate error message. re_exec() returns 1 for a successful match, zero for failure. CONFORMING TO
4.3BSD. NOTES
These functions are obsolete; the functions documented in regcomp(3) should be used instead. SEE ALSO
regcomp(3), regex(7), GNU regex manual COLOPHON
This page is part of release 3.44 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. GNU
1995-07-14 RE_COMP(3)
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