Beefy Boxes and Bandwidth Generously Provided by pair Networks
Your skill will accomplish
what the force of many cannot
 
PerlMonks  

Answer: What can regular expressions NOT do?

( #69434=categorized answer: print w/ replies, xml ) Need Help??

Q&A > regular expressions > What can regular expressions NOT do? contributed by ton

Also cannot solve the "dangling else" problem. That is, if you're checking a piece of code with a bunch of "if" statements which may or may not be followed by "else" statements, it is impossible to write a regexp that will find all occurances of "elses" without matching "ifs" (e.g. the point at which the number of elses exceeds the number of ifs). Note that this is trivially easy to do with a loop.

There are a bunch more things also; have to dig up my compiler books to list them, though :)

Comment on Answer: What can regular expressions NOT do?
Log In?
Username:
Password:

What's my password?
Create A New User
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others making s'mores by the fire in the courtyard of the Monastery: (17)
As of 2015-07-07 17:44 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









    Results (93 votes), past polls