Beefy Boxes and Bandwidth Generously Provided by pair Networks
good chemistry is complicated,
and a little bit messy -LW
 
PerlMonks  

Re: Use Regular Expression to add spaces to a string

by petdance (Parson)
on Mar 26, 2012 at 21:42 UTC ( #961762=note: print w/replies, xml ) Need Help??


in reply to Use Regular Expression to add spaces to a string

Part of what you MUST do when writing a regex is to describe the transformation you want in English. An example is not enough. You might see the transformation as obvious, but we can't, and your regex certainly can't tell what you're thinking.

It seems that what you're wanting to do is this: "Take a nine-character string and change it into the first three characters, followed by a space, followed by the second three characters, followed by a hyphen, followed by the last three characters."

If that's what you want, you write it like this.

$str =~ s/^(...)(...)(...)$/$1 $2-$3/';
But that will also translate "bookstore" into "boo kst-ore". Is that OK? Or do you only want to do transformations if there are digits? Then you have to write it as:
$str =~ s/^(\d\d\d)(\d\d\d)(\d\d\d)$/$1 $2-$3/';

xoxo,
Andy

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://961762]
help
Chatterbox?
Discipulus yaaawn..
[Corion]: DST does that to everybody...
Corion attempts to find who to address to better target his drive-by patches
[Corion]: This time it's for the Duktape embedded Javascript engine, which would be nice to have IMO, but doesn't compile on Windows currently
[Corion]: I imagine it would be fun to have WWW::Mechanize:: Duktape, but I haven't seen a web browser written in Javascript yet, except the ones distributed with PhantomJs

How do I use this? | Other CB clients
Other Users?
Others musing on the Monastery: (12)
As of 2017-03-27 11:03 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    Should Pluto Get Its Planethood Back?



    Results (319 votes). Check out past polls.