The answer is that your particular delimiter '::' has syntactic significance in Perl -- it is the package delimiter. Thus the first form is parsed as a (rather gnarly) package variable. But the second does what you want: substitute each variable individually and then join with the syntax sensitive ::.

If your delimiter had been something more benign, like whitespace, both forms would work.

-Mark

In reply to Re: Manually adding delimiters instead of join() by kvale
in thread Manually adding delimiters instead of join() by Anonymous Monk

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