Hi,
Hello,
Is there a better way to search all elements of an array for a string (without using a loop to test individual elements) than:
$line = join(' ',@myarray); if ($line =~ /my string/) { some code }
I've seen map and grep used by some but also critisized by some. I thought there might be a function to easily search all elements of an array at once for a string but I can't find one.
If all the elements are unique then use a hash.
if ( exists $hash{ 'my string' } ) {
# do something
}The most efficient way to determine if an element exists in an array is to use a for loop and exit early:
my $found = 0;
for ( @array ) {
if ( $_ eq 'my string' ) {
$found = 1;
last;
}
}
If you need to determine the number of matches you can use grep:
my $count = grep $_ eq 'my string', @array;
John -- use Perl; program fulfillment
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