1. Do i need to use lock $hash{foo} ; or lock ( \%hash ) ; if foo is used as shared_clone ?
It depends upon what you intend to modify.
When you have nested hashes so: %hash :shared = &share( {} );
- To add a new key/value pair; or delete a key/value pair; or modify the value associated with an existing key in %hash you need:
lock %hash;
$hash{ existingkey } = newvalue;
# or
$hash{ newkey } = newvalue;
#or
delete $hash{ existingkey };
- To modify the nested anonymous hash associated with the key 'foo', you need:
lock %{ $hash{ foo } };
$hash{foo}{somekey} = somevalue;
# or
delete $hash{ foo }{ somekey };
Ie. lock %{ $h{1} } says lock the hash referenced by the value at $h{1}.
With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.
-
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.
|