Beefy Boxes and Bandwidth Generously Provided by pair Networks
XP is just a number
 
PerlMonks  

comment on

( [id://3333]=superdoc: print w/replies, xml ) Need Help??
I am just curious which methods people use for this very common problem and which is the most popular
Generally I'll just use a grep and double negation e.g
my @array = qw/ a list of words /; print "yep, it's there" if !!grep { $_ eq "of" } @array; __output__ yep, it's there
Nice and efficient in newer versions of perl (5.6.1+ ?) as it won't build a list IRC. Even quicker would be a simple regex
my @array = qw/ a list of words /; print "yep, it's there" if "of" =~ /\b (?: ${\join('|', @array) }) \b/x; __output__ yep, it's there
It's not quicker on it's own (list size etc will effect performance) but if you prebuild the word list it should be quicker than grepping every time.
HTH

_________
broquaint


In reply to Re: Checking a string's presence within an array. by broquaint
in thread Checking a string's presence within an array. by antirice

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Are you posting in the right place? Check out Where do I post X? to know for sure.
  • Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
    <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
  • Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
  • Want more info? How to link or How to display code and escape characters are good places to start.
Log In?
Username:
Password:

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

How do I use this?Last hourOther CB clients
Other Users?
Others admiring the Monastery: (3)
As of 2024-03-29 06:15 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found