Implicit doesn't mean you don't know about it. It means you don't have to take any action for it to happen. You don't convert the value before passing it to the addition operator, so any conversion that occurs is implicit.

Personally, I don't really think about it as conversion (whether implicit or explicit) since conversion implies loss of the original value. I think of the addition operator as "getting the numeric value of the operand". For example, the numeric value of a scalar is "123" whether "123" is stored in the IV slot or "123" is stored in the PV slot, and the numeric value of a scalar is zero whether "0" is stored in the IV slot or "abc" is stored in the PV slot.

In reply to Re^8: Strong typing and Type Safety.A multilanguage approach (implicit) by ikegami
in thread Strong typing and Type Safety.A multilanguage approach by nikosv

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.