如何检查是否使用Perl加载了Windows设备驱动程序?
I was wondering how I could check if a device driver is loaded using Perl? The operating system is Windows Server 2003, and I'm interested in seeing i...
如何从Perl数组中删除重复的项?
I have an array in Perl: 我有一个Perl数组: my @my_array = ("one","two","three","two","three"); How do I remove the duplicates from the array? 如何从数组中删除副本?10 ...
我想解释Perl的正则表达式引擎的行为
Update by @Borodin I've rewritten this code as something I think is more comprehensible. The OP was comparing b with d and suchlike, and I've changed ...
perl和java regex功能之间有什么区别?
What are the differences between perl and java with regard to what regular expression terms are supported? perl和java在支持哪些正则表达式术语方面有什么区别? This question...
perl 正则匹配代码
36 chomp $line; 37 my @vec = split /\t/, $line; 38 my @vec2 = ($vec[1]=~/[a-z]+/g); 39 my $size = scalar @vec2; 40 if ($size ==1) ...
Perl和操作系统交互(一):system、exec和反引号
调用操作系统命令:system函数system函数可以直接让perl调用操作系统中的命令并执行。system入门示例例如:#!/usr/bin/perlsystem 'date +"%F %T"';system 'echo hello world';system 'echo',"hello","wo...
Perl导入代码文件
从函数复用开始:eval和do执行perl文件 当我们定义了一个功能比较通用的子程序,比如获取数值的绝对值。想要到处使用这个子程序,就得不断复制、粘贴这段绝对值函数的定义文本。显然,这是不太理想的方式。 于是,就将包含这个子程序的代码放进一个perl文件,然后通过特殊的语法去导入这个文件。 例如,文...
perl备忘
List Operators:sort reverse grep mapmy @castways = sort qw( first second third); # qw 给单词自动加上双引号grep: 从list中一个一个的取出,然后添加到$_中,然后通过测试标量的值,为true的话添加到输出列表...
Perl 关于 use strict 的用法
什么场合要用 use strict当你的程序有一定的行数时,尤其是在一页放不下时,或者是你找不到发生错误的原因时。为什么要用 use strict?众多的原因之一是帮你寻找因为错误拼写造成的错误。比如错误使用了'$recieve_date' 变量,但实际上你在程序中已声明的是 '$receive_d...
如何打包我的Perl脚本以在没有Perl的机器上运行?
People also often ask "How can I compile Perl?" while what they really want is to create an executable that can run on machines even if they don't hav...
如何在Mac OS X上运行Perl脚本?
How do I run a Perl script on OS X? 如何在OS X上运行Perl脚本? I honestly can't find the answer anywhere! Presumably I have to run a command in Terminal but w...
如何使用Perl整理和汇总文件中的记录?
I have a text file in the following format: 我有一个以下格式的文本文件: 211B1 CUSTOMER|UPDATE| 211B2 CUSTOMER|UPDATE| 211B3 CUSTOMER|UPDATE| 211B4 CUSTOMER|UPDA...
为什么Java和Perl中的正则表达式有不同的表现?
My understanding is that Java's implementation of regular expressions is based on Perl's. However, in the following example, if I execute the same reg...
如何从Perl中的字符串中删除无效的XML字符?
I'm looking for what the standard, approved, and robust way of stripping invalid characters from strings before writing them to an XML file. I'm talki...
如何从Perl中的示例XML文档创建模式?
I need to create a XSD schema based on a XML file. Are there any Perl modules which can do this? 我需要基于XML文件创建XSD架构。有没有可以做到这一点的Perl模块?1 个解决方案 ...
如何分叉Perl CGI程序来解决长时间运行的任务?
I am writing a Bulk Mail scheduler controlled from a Perl/CGI Application and would like to learn abut "good" ways to fork a CGI program to run a sepa...
如何限制Perl程序中的下载?
Is there any Perl module available for download throttling? I would like to download a certain file but limit the download rate to a specific number o...
如何从Perl创建XML ?
I need to create XML in Perl. From what I read, XML::LibXML is great for parsing and using XML that comes from somewhere else. Does anyone have any su...
如何读取Perl CGI程序中的URL参数?
How can I read the URL parameter in a Perl CGI program? 如何读取Perl CGI程序中的URL参数?3 个解决方案 #1 ...
我的Perl脚本如何确定Excel文件是XLS还是XLSX格式?
I have a Perl script that reads data from an Excel (xls) binary file. But the client that sends us these files has started sending us XLSX format file...