my (@sargs) = @_; is it equivalent with : my @sargs = @_; ? (without bracket)
yes
After there is : my $config = {"delete" => 0, soFiles => []}; Is it right that $config is a hash table ? I have a doubt, because I would write : my %config = ( "delete" => 0, soFiles => [] );
$config is a hash reference, you create it with {}.
is these 2 lines are equivalent ? my $config = {"delete" => 0, soFiles => }; my $config = {"delete" => 0, "soFiles" => };
yes, => is a synonym for the comma, expect that any word to the left of it is interpreted as a string. But you need a value to the right of => or your hash is not created correct use use warnings;.
After that, delete is initialized like this : $config->{delete} = 1; # why -> is it a reference ? why not to use : $config{delete} = 1 ?
You created it as a has reference with the {}. 
my %conf = ( abc => 12 );
print $conf{abc}; # this is a hash
my $conf_ref = { abc => 13 };
print $conf_ref->{abc}; # conf_ref is a reference to a hash

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Boris

In reply to Re: Perl data types and references by borisz
in thread Perl data types and references by thierry

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