Look at the output without wc. The += operator does not concatenate the right side to the left. It is the .= operator that does it.

Update Ok - there is no wc in the second example. But once again look at the line with += the left side of it is a list - a list does not return its length in a scalar context (only an array do it).

Update As Abigail-II pointed out split in scalar context returns the number of fields.

In reply to Re: What is the difference? by zby
in thread What is the difference? by YAFZ

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