That sort of structure is called an array of arrays in Perl, which is short for an array of references to array. Each element of @b is a reference. If you want the contents of the referenced array, you'll need to dereference the element of @b: 
@x = @{$b[0]};

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In reply to Re: How to store the list of values to array from 2D array by ikegami
in thread How to store the list of values to array from 2D array by anbutechie

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