Yes, you can do
s/^\s+|\s+$//g but it is definaly not optimized. It is generally preferred to use the two regexes, since it is roughly 3 times faster:
use Benchmark;
my $val = " Smart Way ";
timethese(1000000, {
regex1 => sub {
my $tmp = $val;
$tmp =~ s/^\s+|\s+$//g;
},
regex2 => sub {
my $tmp = $val;
$tmp =~ s/^\s+//;
$tmp =~ s/\s+$//;
}
});
Results:
Benchmark: timing 1000000 iterations of regex1, regex2...
regex1: 9 wallclock secs ( 6.43 usr + 0.02 sys = 6.45 CPU)
@ 155038.76/s (n=1000000)
regex2: 2 wallclock secs ( 2.65 usr + 0.00 sys = 2.65 CPU)
@ 377358.49/s (n=1000000)
