Node:Examples of Interpolation (ASCII Hex Values),
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Examples of Interpolation (ASCII Hex Values)
You need not use only the octal values when interpolating
ASCII characters into double-quoted strings. You can also use
the hexadecimal values. Here is our same program using the hexadecimal
values this time instead of the octal values:
#!/usr/bin/perl
use strict;
use warnings;
print "A backslash: \x5C\n";
print "Tab follows:\x09over here\n";
print "Ring! \x07\n";
print "Please pay bkuhn\x40ebb.org \x2420.\n";
As you can see, the theme of "there's more than one way to do it" is
really playing out here. However, we only used the ASCII codes as a
didactic exercise. Usually, you should use the single character
sequences (like \a and \t), unless, of course, you are
including an ASCII character that does not have a shortcut, single
character sequence.
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