(3) in the two snippets I posted here I cannot spot any real difference in the assignement but they behaves differently. Why?

$x = 'a' x (2**30); is different from $order=30; $x = 'a' x ( 2 ** $order );. The first one's RHS is considered a constant. The other's is not as it has that $order.

In reply to Re^2: Memory usage double expected -- further questions by bliako
in thread Memory usage double expected by sectokia

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