That prints all four elements of b 

10
11
12
13

[download]
and then a contains : [1, 13, 3]. So it does not correspond to your C-style for loop where you only print the first three elements, and the second value in the declaration of a is just thrown away.

To achieve the same result in Perl you can do: 

@a = 1..3;
@b = qw/2 4 7 9/;
for (@b) {$a[1] = $_; say; }

[download]

In reply to Re^3: Using an array element as a loop iterator by Eily
in thread Using an array element as a loop iterator by gurpreetsingh13

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