%s is a string format specification. The format specification matches /%([+-0#]? \d+ (.\d+)) ([bcdefginopsuxDEFGOUX])/x. Possibly most interesting to you are that a - left justifies in a field. The first digit group specifies the field width (minimum width for strings) and the second digit group is decimal digits for floats, minimum field width for integers and maximum field width for strings.

The flags most likely of interest to you are 'd' or 'i' (integer), 'f' (float) and 's' (string).

DWIM is Perl's answer to Gödel

In reply to Re^5: using format twice by GrandFather
in thread using format twice by zer

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, details, 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, summary, 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.