Beefy Boxes and Bandwidth Generously Provided by pair Networks
We don't bite newbies here... much
 
PerlMonks  

Re: Order of terms in square braces

by imp (Priest)
on Feb 03, 2007 at 00:44 UTC ( #598034=note: print w/ replies, xml ) Need Help??


in reply to Order of terms in square braces

Because dashes in character classes are used to express ranges, like [a-z], except when they are the first item. Because of this you should always either put them as the first item, or escape them with \


Comment on Re: Order of terms in square braces
Download Code
Re^2: Order of terms in square braces
by TOD (Friar) on Feb 03, 2007 at 05:10 UTC
    first or last element in the class.

      or following a POSIX class
      or preceeding a POSIX class
      or following ^ if the ^ is the first character
      etc

      Basically, anywhere it doesn't make sense to treat it as a range seperator.

      Escaping - (like the OP needlessly did for ( and )) will force it to match literally.

Re^2: Order of terms in square braces
by throop (Chaplain) on Feb 05, 2007 at 19:37 UTC
    d'Oh.

    I should have known that. Thanks.

    throop

    The people are bright and certain, Where I am dim and confused; The people are clever and wise, Where I am dull and ignorant,

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://598034]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others musing on the Monastery: (13)
As of 2015-07-06 14:02 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 (75 votes), past polls