perl ^符号
发布时间:2020-12-15 23:49:47 所属栏目:大数据 来源:网络整理
导读:pre name="code" class="sql"[oracle@june2 perl]$ cat a4.pl my $a = "abe";if ($a =~ /a[^d]e/){print "2222211n"};[oracle@june2 perl]$ perl a4.pl 2222211[oracle@june2 perl]$ cat a4.pl my $a = "ade";if ($a =~ /a[^d]e/){print "2222211n"};[orac
<pre name="code" class="sql">[oracle@june2 perl]$ cat a4.pl my $a = "abe"; if ($a =~ /a[^d]e/){print "2222211n"}; [oracle@june2 perl]$ perl a4.pl 2222211 [oracle@june2 perl]$ cat a4.pl my $a = "ade"; if ($a =~ /a[^d]e/){print "2222211n"}; [oracle@june2 perl]$ perl a4.pl [oracle@june2 perl]$ ^表示除其之外的所有字符 [oracle@june2 perl]$ cat a4.pl my $a = "abe"; if ($a =~ /a[^]e/){print "2222211n"}; [oracle@june2 perl]$ perl a4.pl 2222211 [oracle@june2 perl]$ cat a4.pl my $a = "abe"; if ($a =~ /a[^/]e/){print "2222211n"}; [oracle@june2 perl]$ perl a4.pl 2222211 [oracle@june2 perl]$ cat a4.pl my $a = "a/e"; #if ($a =~ #a[^/]e#){print "2222211n"}; if ($a =~ m#a[^/]e#){print "2222211n"}; [oracle@june2 perl]$ perl a4.pl [oracle@june2 perl]$ 因为使用非 / 字符作为分隔符,m 不能省略。 (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |