There is something I dont understand in the new Exegesis, namely (page 7 bottom): 
# Named binding...
($who, $why) := (why => $because, who => "me");
# same as: $who := "me"; $why := $because;

[download]
This makes no sence to me. Simply because a pair has the same key value as one of the variables on the left side, it is assigned to that?
Not assigned, bound. Binding in perl 6 does the same thing as the aliasing of foreach's loop variable, only you can do it everywhere. Once you execute this statement, $why and $because are essentially the same variable--they both point to the same underlying structure. $who is bound to the constant "me", which means printing $who prints "me" and trying to assign to it throws an error because you're trying to assign to a constant.

Perl 6 is making a string distinction between the name of a variable and the structure of the variable. Assignment copies the contents of one structure to another, while binding changes what structure a variable name refers to.

In reply to Re: Exegesis 6 - Named binding by Elian
in thread Exegesis 6 - Named binding by Cine

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.