Consider the following anonymous array of anonymous arrays:
my $a = [ [ 00 , 01 ]
, [ 10 , 11 ]
] ;
I can print the first element of the first anonymous array:
print "$$a[ 0 ][ 0 ]\n" ;
or, equivalently, I can explicit use bracers to dereference it:
print "${$a}[ 0 ][ 0 ]\n" ;
Should I not need two pairs of bracers? $a is a reference to the anonymous
array. The elements of the anonymous arrays are references to anonymous
arrays, correct?
The following seems to achieve this result:
print "${${$a}[ 0 ]}[ 0 ]\n" ;
Is the outmost pair of bracers with the appropriate symbol ($, @, %) the
default? If so, how does perl select the correct symbol?
I realize that it is seemingly moot, but it may help my understanding of
more complex structures, like hash of arrays or hash of hases.
Thanks,
Kevin
Kevin Viel, PhD
Post-doctoral fellow
Department of Genetics
Southwest Foundation for Biomedical Research
San Antonio, TX 78227
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