4.6 引號整理

1. 單引號：q

$target = q[This is what you have]; 

同於

$target = 'This is what you have'; 


2. 雙引號：qq

$target = qq[This is what you have];

同於

$target = "This is what you have";


3. 執行符：qx

$run = qx[ls -la];

同於

$run = `ls -la`;


4. 串列：qw

@str = qw( ABC EDF XYZ 123 );

同於

@str = ("ABC", "EDF", "XYZ", "123");

同於

@str = split(/ /, q/ABC EDF XYZ 123/);


5. 正規表示式：qr

foreach $pattern (@patterns) {
	$reg = qr/$pattern/;
	foreach $line (@lines) {
		print "$line 符合" if ($line =~ /$reg/); 
	}

}