Beefy Boxes and Bandwidth Generously Provided by pair Networks
There's more than one way to do things
 
PerlMonks  

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
While Aristotle posted a solution that more closely approximates the switch/case behavior, but - aside from the additional tests - isn't yours the better way to do it in Perl (meaning that it's a hell of a lot more readable as the number of cases grows)?

Or what about:

$accum = ''; for ( $var ) { if ( $_ < 1 ) { last; } else { $accum = 'j'.$accum; } if ( $_ < 2 ) { last; } else { $accum = 'i'.$accum; } if ( $_ < 3 ) { last; } else { $accum = 'h'.$accum; } if ( $_ < 4 ) { last; } else { $accum = 'g'.$accum; } if ( $_ < 5 ) { last; } else { $accum = 'f'.$accum; } if ( $_ < 6 ) { last; } else { $accum = 'e'.$accum; } if ( $_ < 7 ) { last; } else { $accum = 'd'.$accum; } if ( $_ < 8 ) { last; } else { $accum = 'c'.$accum; } if ( $_ < 9 ) { last; } else { $accum = 'b'.$accum; } $accum = 'a'.$accum; }
Wouldn't that be similar, but provide a shortcut out (so we don't always run ten tests)? Also, push-ing onto an array and join-ing it at the end might be a little more flexible than the . operator...

Just musing (as usual)...

--J

Update: The examples using goto further down are even faster (fewer tests) and preserve the fallthrough and the ability to execute arbitrary code in each case (rather than literally doing string manipulation), but you get an earful from purists when you use goto. :-)


In reply to Re^7: fall through switch/case in perl by Rhys
in thread fall through switch/case in perl by ykar

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



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • 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 romping around the Monastery: (5)
    As of 2020-11-26 08:09 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      No recent polls found

      Notices?