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

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??
more clearer , still avoid string-eval
#!/usr/bin/perl -- use strict; use warnings; my $blah = q{-0.137 + (0.00479 / (W/0.9)) + (2.5593 * (W/0.9 ) ,0.045 +,0 }; print EvalPolynominal( $blah, 1,1 ); sub EvalPolynominal { #first parameter gives the polynominal string #second parameter gives the min-des width #third parameter gives the short-line length my $polynominal = shift; my $curWidth = shift; my $curLength = shift; $polynominal =~ s/W/$curWidth/g ;#replace W with current value of +min width $polynominal =~ s/L/$curLength/g ;#replace L with current value of + min Length local $@; my $ret = eval $polynominal; warn "Trying:\n\t$polynominal\nbut got: $@\n" if $@; return $ret; } __END__ $ perl -we " -0.137 + (0.00479 / (1/0.9)) + (2.5593 * (1/0.9 ) ,0.045 +,0 " syntax error at -e line 1, at EOF Execution of -e aborted due to compilation errors. $ perl blah Trying: -0.137 + (0.00479 / (1/0.9)) + (2.5593 * (1/0.9 ) ,0.045,0 but got: syntax error at (eval 1) line 2, at EOF Use of uninitialized value in print at blah line 4. $ perl -we " -0.137 + (0.00479 / (1/0.9)) + (2.5593 * (1/0.9 ) ,0.045 +,0 " syntax error at -e line 1, at EOF Execution of -e aborted due to compilation errors.

In reply to Re^4: Regarding the polynomial evaluation. Stuck at one part. please helpppp!! by Anonymous Monk
in thread Calculating polynomials and pushing them into an array. Stuck at one part. please helpppp!! by freekngeek

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 drinking their drinks and smoking their pipes about the Monastery: (8)
    As of 2014-08-29 23:42 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      The best computer themed movie is:











      Results (289 votes), past polls