Re^3: Error "Can't use an undefined value as a HASH reference" while working with generated objects

my %valeur;
if(
    @values
    and defined $values[0]
    and 'ARRAY' eq ref $values[0]
    and defined $values[0][0]
    and 'HASH' eq ref $values[0][0]
) {
    %valeur = %{ $values[0][0] };
}
[download]

my %valeur;
if ( my $want = Dive( \@values, qw/ 0 0 / ){
    %valeur = %$want;
}
[download]

Comment on Re^3: Error "Can't use an undefined value as a HASH reference" while working with generated objects Select or Download Code

Replies are listed 'Best First'.
Re^4: Error "Can't use an undefined value as a HASH reference" while working with generated objects by tobyink (Canon) on Oct 11, 2012 at 14:03 UTC
The Data::Diver example will die if $values[0][0] is defined and true but not a hashref - e.g. if it's an arrayref. `use Data::Diver 'Dive'; use Scalar::Does 'does'; if (my $want = Dive( \@values, qw/ 0 0 / )) { %valeur = %$want if does($want, 'HASH'); }` [download] `perl -E'sub Monkey::do{say$_,for@_,do{($monkey=[caller(0)]->[3])=~s{::}{ }and$monkey}}"Monkey say"->Monkey::do'`	[reply] [d/l]
Re^4: Error "Can't use an undefined value as a HASH reference" while working with generated objects by HJO (Acolyte) on Oct 11, 2012 at 10:28 UTC
Waow thanks, I really didn't push the `defined` so far ... I just tested it (the first method, I'm having some trouble with your second, some undeclared varibles...), It's working as well, thanks	[reply] [d/l]
Re^5: Error "Can't use an undefined value as a HASH reference" while working with generated objects by Anonymous Monk on Oct 11, 2012 at 10:46 UTC
the first method, I'm having some trouble with your second, some undeclared varibles... Its a missing ")" one pair for if() and another for Dive()	[reply]
Re^6: Error "Can't use an undefined value as a HASH reference" while working with generated objects by HJO (Acolyte) on Oct 12, 2012 at 07:27 UTC
Hi, Well yes it was, I also didn't used the proper way of calling the module, I check in the doc and found out, it seems to be working also just fine, thanks a lot PS : I was suppose to call it that way : `use Data::Diver qw( Dive );`	[reply] [d/l]


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