Re: Why am I getting Can't use string (<string value>) as an ARRAY ref wile "strict refs" in use

I am not sure what you are trying to do. Strictly speaking, perl does not have such a thing as a "multidimensional array". It simulates it very well with an "array of arrays" (or more accurately, an array of array references). You are storing a string in the $ii element of the array @mtab. In the next statement, you use the syntax for "array of arrays". Perl expects that $ii element to contain a reference to one of several arrays (with $jj as the index into that array). The message is telling you that the main array contains the string you stored there rather than a reference. I cannot give you the correct syntax without knowing what you are trying to do. I suspect that a hash would be a better data structure.

Bill

Comment on Re: Why am I getting Can't use string (<string value>) as an ARRAY ref wile "strict refs" in use

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Re^2: Why am I getting Can't use string (<string value>) as an ARRAY ref wile "strict refs" in use by tobyink (Canon) on Feb 28, 2019 at 16:57 UTC
There's also multidimensional hashes: `perl -E'my %x; $x{1,2,3} = 4; print $x{1,2,3}, "\n";'` [download] They're kinda weirdly implemented and not really used much. toby döt ink	[reply] [d/l]
Re^3: Why am I getting Can't use string (<string value>) as an ARRAY ref wile "strict refs" in use by afoken (Chancellor) on Mar 01, 2019 at 13:20 UTC
There's also multidimensional hashes [...] They're kinda weirdly implemented and not really used much. Basically, all list elements are joined by $; (defaults to \034 = \x1C = ASCII FS) before using them as hash key. This is not multidimensional, it is just a poor emulation used mainly for awk compatibility. Problems: The list elements must not contain the value of `$;` or else your data becomes garbage. Of course, you should not modify `$;` at runtime or else your data becomes garbage again. keys and each return the joined keys, not lists of key parts. There is no automatic split. The syntax does not work for slices. Alexander -- Today I will gladly share my knowledge and experience, for there are no sweeter words than "I told you so". ;-)	[reply] [d/l] [select]
Re^3: Why am I getting Can't use string (<string value>) as an ARRAY ref wile "strict refs" in use by Lotus1 (Vicar) on Feb 28, 2019 at 21:48 UTC
I found a description of this at Multi dimensional array emulation. It looks like it is creating a hash key from the list, "1,2,3". This seems like it could be a good way to implement a sparse array. `use warnings; use strict; use Data::Dumper; my %x; $x{1,2,3} = 4; print $x{1,2,3}, "\n"; print Dumper(\%x); __DATA__ 4 $VAR1 = { '1‡˜2‡˜3' => 4 };` [download]	[reply] [d/l]