Re: confused about reference
Richard Lee wrote:
I was just testing some reference and while trying out below I am
trying to understand below
@{$yahoo->{yahoo}}... I can see that this is pointing to
0,1,3 by running the code.
But I am trying to really understand whether this is trying to say
since value of 'yahoo' is array put @ at the front?
or @ is there because it's array slice??
Can someone explain this?
@{$yahoo->{yahoo}} has @ on it because it's value of yahoo is
reference. Is this right?
Also, %{$base[0]}, trying to understand this.
According to the tutorial,
%base referenced is %{$base}
what is the difference between %{$base[0]} vs %{$base}[0] Are we
here talking about first being hash reference which first item is
array reference vs second one is hash reference's first item ?
This one, I cannot figure it out
thank you.
#!/usr/bin/perl
use warnings;
use strict;
use Data::Dumper;
my $yahoo = { 'yahoo' => [ 0, 1, 3],
'msn' => [ 12, 32, 44]
};
print Dumper($yahoo);
print
"\n\n\n\n\n\n";
print "${$yahoo}{yahoo}[0]\n"; # prints 0
print "$yahoo->{yahoo}[0]\n";# prints 0
print "@{$yahoo->{yahoo}}\n";# prints 0,1,3
print "%{$yahoo->{yahoo}}\n";# print %{ARRAY(0x832e8c4)}
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confused about reference
I was just testing some reference and while trying out below I am trying
to understand below
@{$yahoo->{yahoo}}... I can see that this is pointing to 0,1,3
by running the code.
But I am trying to really understand whether this is trying to say since
value of 'yahoo' is array put @ at the front?
or @ is there because it's array slice??
Can someone explain this?
Also, %{$base[0]}, trying to understand this.
According to the tutorial,
%base referenced is %{$base}
what is the difference between %{$base[0]} vs %{$base}[0]
Are we here talking about first being hash reference which first item
is array reference vs second one is hash reference's first item ?
thank you.
#!/usr/bin/perl
use warnings;
use strict;
use Data::Dumper;
my $yahoo = { 'yahoo' => [ 0, 1, 3],
'msn' => [ 12, 32, 44]
};
print Dumper($yahoo);
print
"\n\n\n\n\n\n";
print "${$yahoo}{yahoo}[0]\n"; # prints 0
print "$yahoo->{yahoo}[0]\n";# prints 0
print "@{$yahoo->{yahoo}}\n";# prints 0,1,3
print "%{$yahoo->{yahoo}}\n";# print %{ARRAY(0x832e8c4)}
--
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
http://learn.perl.org/
