Use whichever most clearly shows the intent of your code. I can see cases for concatenation and interpolation and join().

For example, I prefer the first one in this example. I think it feels more like reading prose. 

print "Action status: $status"; # Preferred by me
print 'Action status: ' . $status;

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But say you're building a string to show the time. I think the first highlights the elements that are being used to build $date. 

$date = join( '/', $day, $month, $year ); # Preferred by me
$date = "$day/$month/$year";

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And sometimes it doesn't make sense to interpolate or join and you just concatenate. 

$response = $head . $html_opening . $body . $html_closing; # preferred
$response = join( '', $head, $html_opening, $body, $html_closing );

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Bottom line: Go for what is most expressive, and makes the code clearest to the reader. Assume that any microseconds you shave will be insignificant.

xoxo,
Andy

In reply to Re: String concatenation by petdance
in thread String concatenation by Anonymous Monk

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