ExampleThe following example shows how Perl can be used to decode JSON objects. Here you will need to install Data::Dumper module if you already do not have it on your machine.#!/usr/bin/perl use JSON; use Data:
To repeat a string with a specified number of times, use character x followed by the number. In the following example we have used the number 4 after character x that is why the string is repeated four number of times in the output. $str="Cherry";$mystr=$str x4;print"$mystr\n"; ...
my $text = "Perl is a powerful programming language!"; # 去除文本中的标点符号 $text =~ s/[[:punct:]]//g; # 转换为小写 $text = lc $text; print $text . "\n"; Perl在机器学习集成中的应用 虽然Perl没有像Python那样丰富的机器学习库,但可以通过调用外部工具或使用特定的Perl模块来实现机器...
这里SCOKET是客户端发出的socket()调用返回的套接字描述符,ADDRESS是类似于bind调用的套接字地址,除了它包含远程服务器的IP地址。 $port = 21; # For example, the ftp port $server_ip_address = "10.12.12.168"; connect( SOCKET, pack_sockaddr_in($port, inet_aton($server_ip_address))) or die "C...
Here is an example showing its basic usage: 执行此代码时,将显示以下内容: “字符串长度为:27。”数字“27”是短语“This is a Test and ALL CAPS”中的字符总数,包括空格。 When this code is executed, it displays the following: "Length of the String is: 27."The number "27" is the total ...
To make our "Perl execute" example even more powerful, you can use Perl variables inside of the backtick operators. This is very helpful inside of actual programs. For instance, instead of hard-coding the name of my home directory into the command in the previous example, we can imagine ...
It can be used for almost all facets of programming, from rapid prototyping and large-scale development projects. Here are 4,735 public repositories matching this topic... Language: All Sort: Most stars learnbyexample / Command-line-text-processing Star 10.2k Code Issues Pull requests ...
In the next example, we get all rows from the table. fetch_all_rows.pl #!/usr/bin/perl use 5.30.0; use warnings; use DBI; my $dsn = "dbi:MariaDB:dbname=testdb"; my $user = "user7"; my $password = 's$cret'; my %attrs = (RaiseError => 1, PrintError => 0); my $db...
她写了相当多的 Perl 诗歌,以及一些她在 1992 年 Usenet 冬季技术大会上拿出来的关于 Perl 诗歌的文章,标题是“Camels and Needles: Computer Poetry Meets the Perl Programming Language”。(这篇文章可以在 CAPN 的 misc/poetry.ps 找到。)除了是最多产的 Perl 诗人之外,Sharon 还是下面这首诗歌的作者,这首...
虽然Perl不是官方缩写词,但很少有人将它用作Practical Extraction and Report Language。 它用于公共和私营部门的关键任务项目。 Perl是一种Open Source软件,根据其Artistic License或GNU General Public License (GPL)。 Perl由Larry Wall创建。 Perl 1.0于1987年发布到usenet的alt.comp.sources。