is rw basically a null-op on objects/references?

[Ingo Blechschmidt]

Hi,

does the following work as expected?

  for %hash.pairs -> $pair { # Note: No "is rw"!
    $pair.value = ...;       # Modifies %hash
  }

Or is it necessary to declare $pair as is rw? (The snippet does not
modify $pair, but $pair.value.)


--Ingo

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