Perl continue Statement

Perl cycle

Perl continue block is usually executed before the conditional statement judgment again.

continue statements can be used in while and foreach loop.

grammar

while loop continue statement syntax is as follows:

while(condition){
   statement(s);
}continue{
   statement(s);
}

foreach loop continue statement syntax is as follows:

foreach $a (@listA){
   statement(s);
}continue{
   statement(s);
}

Examples

continue to use while loop statement:

#/usr/bin/perl
   
$a = 0;
while($a < 3){
   print "a = $a\n";
}continue{
   $a = $a + 1;
}

The above program, the output is:

a = 0
a = 1
a = 2

continue to use the foreach loop statement:

#/usr/bin/perl
   
@list = (1, 2, 3, 4, 5);
foreach $a (@list){
   print "a = $a\n";
}continue{
   last if $a == 4;
}

The above program, the output is:

a = 1
a = 2
a = 3
a = 4

Perl cycle