print ($foo & 255) + 1, "hello";
prints the lower 8 bits of $foo and does not add 1 or print "hello" because the paran around $foo & 255 make print stop working at the ")" The 1 and "hello" are evaluated as seperate statements.
print +($foo & 255) + 1, "hello";
|file: /Techref/language/perl/expression.htm, 1KB, , updated: 2009/5/14 14:40, local time: 2018/8/21 05:31,
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