the current hash being initialized
That hash is necessarily empty until the entire value on the right (the map) is completely computed. You can't start shoving values into there because you can't alter the existing data, or else things like this woudn't work:
@a = map { $a[$_] > 1 ? $a[$_] * 2 : () } 0..$#a;
In this case, you can't start altering @a during the map, because @a might be getting shorter, and then you wouldn't have the right values on the right.
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.
|
