define your own
hgrep!
$a=key
$b=value
DB<142> sub hgrep (&%) {
my $f=shift;
my @res;
local ($a,$b);
while ( ($a,$b)= splice(@_,0,2) ) {
push @res, $a => $b if $f->()
}
return @res
}
DB<143> %h = ( cat=>0, cut=>1, caty=>2 )
=> ("cat", 0, "cut", 1, "caty", 2)
DB<144> hgrep { $a =~ /^cat/ } %h
=> ("cat", 0, "caty", 2)
DB<145> hgrep { $b>1 } %h
=> ("caty", 2)
UPDATE: see Hash::MostUtils for a similar approach.
-
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.