Just as AnonyMonk mentioned. @job, I used the undef assignment as an optimization to avoid an intermediate copy of a large string, but still wanted to assign second arg onwards. foo is a function that wrote the string to a file, and is a code hotspot.

In reply to Re^2: Is undef list assignment a no-op? by repellent
in thread Is undef list assignment a no-op? by repellent

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