Beefy Boxes and Bandwidth Generously Provided by pair Networks
Don't ask to ask, just ask
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??

First, it doesn't seem to work correctly.    I tried with the expression (+ 1 2 3 (* 4 3 (- 20 1) (% 5 2)) 3 4) and got the answer 2221 when it should be 241.



sub solvepart($); ... sub reformat; ... sub reformat($){ ... sub solvepart($){

The declaration for reformat doesn't have a prototype but the definition does even though reformat does not accept any arguments    YOU SHOULD NOT USE PROTOTYPES.



if ($given ~~ /(?:exit)|(?:end)|(?:quit)/i){ ... if ($VERBOSE or $VERBOSE ~~ /v(?:erbose)?/i){

Is there any good reason to use the smartmatch operator (~~) instead of the binding operator (=~)?    /(?:exit)|(?:end)|(?:quit)/i could be written more simply as /exit|end|quit/i.



my $num=qr/(-?\d++\.?\d*?)/; ... unshift(@stack, [$2,$3,$4]) while $given =~ s/(.*)\((\S++) ++(-?\d +++\.?\d*?) ++(-?\d++\.?\d*?)?\)/$1/;

Why define $num if you are not going to use it?



if ($level[0]eq'+'){ $level[2] ?($value=$level[1]+$level[2]) :($value+=$level[1]); } elsif ($level[0]eq'-'){ $level[2] ?($value=$level[1]-$level[2]) :($value=$level[1]-$value); } elsif ($level[0]eq'/'){ $level[2] ?($value=$level[1]/$level[2]) :($value=$level[1]/$value); } elsif ($level[0]eq'*'){ $level[2] ?($value=$level[1]*$level[2]) :($value*=$level[1]); } elsif ($level[0]eq'**'or$level[0]eq'^'){ $level[2] ?($value=$level[1]**$level[2]) :($value=$level[1]**$value); } elsif ($level[0]eq'%'){ $level[2] ?($value=$level[1] % $level[2]) :($value=$level[1] % $value); }

Could be written more simply as:

if ($level[0]eq'+'){ $value = $level[1] + $level[2] || $value; } elsif ($level[0]eq'-'){ $value = $level[1] - $level[2] || $value; } elsif ($level[0]eq'/'){ $value = $level[1] / $level[2] || $value; } elsif ($level[0]eq'*'){ $value = $level[1] * $level[2] || $value; } elsif ($level[0]eq'**'or$level[0]eq'^'){ $value = $level[1] ** $level[2] || $value; } elsif ($level[0]eq'%'){ $value = $level[1] % $level[2] || $value; }


Update: this is how I would probably do it:


In reply to Re: Polish Prefix Calculator by jwkrahn
in thread Polish Prefix Calculator by protist

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!
  • 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
  • Outside of code tags, you may need to use entities for some characters:
            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 exploiting the Monastery: (17)
    As of 2014-07-29 17:07 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      My favorite superfluous repetitious redundant duplicative phrase is:









      Results (224 votes), past polls