Btw, if the $action variable comes from user input - most likely in a CGI script -, you will want to check that it actually contains the name of a function you have intended for public calling. That's easiest to make sure if you use a hash to map names to coderefs.
Alternatively, you could put the public functions in a package and use the symbol table hash to get at them.
if(exists $Action::{$action}) {
$Action::{$action}->(@params);
}
else {
croak "No such action '$action'";
}
package Action;
sub post {
# ...
}
Makeshifts last the longest.
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