I usually avoid code like $pointer = (++$pointer) % @buffer; where the same variable is modified twice within the same expression. It means that the outcome depends on the order of evaluation, which isn't defined in all cases (it is in the case of assignment though).

Instead I'd just write $pointer = (1 + $pointer) % @buffer.

Perl 6 - second systems done right

In reply to Re^3: Circular buffer by moritz
in thread Circular buffer by Anonymous Monk

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