for(1..10){
print ;
}
sub test{
open FILE,"<d:/code/zdd.txt" or die $! ;
my$olds= $/ ;
local $/=undef ;
my$slurp=<FILE> ;
print$slurp,"\n" ;
$/=$olds ;
}
my$str="<Code>200</Code>" ;
if($str=~/(?<=<Code>)(\d+)(?=<\/Code>)/){
print"string before matched: $`","\n" ;
print"matched string: $&","\n" ;
print"string after matched: $'","\n" ;
}
sub add {
my ($num1, $num2) = @_;
return $num1 + $num2;
}
sub square {
my $num = shift ; # same as my $num = shift @_
return $num * $num;
}
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