my %h = ();
foreach(@_) {
   $h{something} = $_; # changes the %h above every time
   push @something, \%h;  # puts the %h into @something multiple times...
}

##</code><code>##

my %h = ();
foreach(@_) {
   $h{something} = $_;    # changes the %h above every time
   push @something, {%h}; # copies the accumulated changes into @something
}

##</code><code>##

foreach( @_ ) {
    my %new_hash = (something => $_ ); # make a new hash
    push @something, \%new_hash; # push it onto the stack
}

##</code><code>##

foreach(@_) {
    push @something, { something => $_ }; # make a new hash and push it onto @something!  Magic!
}