I just started thinking about this, and I know there is probably a very good answer that just hasn't occured to me yet, but why doesn't each automatically reset after loops are exited? It seems to me that that would make each DWIM.
For example, this code:
#!/usr/local/bin/perl -wl
my %hash=(a=>0, b=>1, c=>2);
my $key;
while (defined($key=each(%hash))) { last; }
while (defined($key=each(%hash))) { print($key); }
Produces the output:
b
c
Even though, I would think, the person writing that code would expect:
a
b
c
Is there a good reason not to reset the iterator that I just haven't thought of.
-
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.
|