foreach (@arr){print join(' ', @$_), "\n";} P e r l实际上并不支持真正的二维数组。P e r l允许你使用数组引用的数组，模仿建立二维数组。list-of-lists=([qw(a b c)],[qw(e f g)],[qw(h i j )],);foreach (@arr){print join(' ', @$_), "\n";}
If a scalar is the "singular" in Perl, as we described it at the beginning of Chapter 2, the "pulural" in Perl is represented by lists and arrays. A list is an ordered collection of scalars. An array is a variable that contains a list. People tend to use the terms interchangeably,...
is_ RsubsetL(), Right List is a subset of Left list. 直接返回true. is_LequivalentR(), 二者含有一样的元素,这里的相等,和perl中的相等不一样。下面两个集合也相等。 my @Rlist = qw(baker camera delta delta fargo hilton); my @Mlist = qw(baker cam delta delta fargo hilton hilton); is...
4.列表中的列表 @list_of_lists={[qw(xxx)],[qw(ddf)]}; 5.遍历数组 复制 foreachmy$outer(@list_of_lists){print$outer;foreachmy$inner(@($outer)){print$inner;}} 1. 2. 3. 4. 5. 6. 十四、使用模块 1.use引用其它模块 例:cwd获取环境变量 Strict改变程序运行特性,使之对引用和裸单词变...
This joins numbers directly together. The result is a single string of digits. $ ./empty.pl Combined: 1234 Length: 4 Joining with Newlines Using newline as separator creates multi-line strings from lists. newlines.pl #!/usr/bin/perl ...
Value of list = 4 3 2 12 Perl - Hashes 散列是一组key/value对。 哈希变量前面有百分号(%)符号。 要引用散列的单个元素,您将使用前面带有“$”符号的哈希变量名称,后跟与大括号中的值相关联的“键”。 这是一个使用哈希变量的简单示例 -
Raku port of Perl's List::Util module 1.49SYNOPSISuse List::Util < reduce any all none notall first max maxstr min minstr product sum sum0 pairs unpairs pairkeys pairvalues pairfirst pairgrep pairmap shuffle uniq uniqnum uniqstr >; ...
my$nu_of_lines=count_lines('./Carya.fasta.p3in');print"- File::CountLines统计行数:$nu_of_lines\n\n";#my $lists = count_lines("Carya.fasta.p3in", separator => '\end{itemize}');#print "File::CountLines统计SSR涉及引物模块数:$lists\n\n";###print"## 调用linux系统命令统计行数\...
The any function has the same syntax as , accepting a block and a list of values, but it only returns true or false. True, if the block gives true for any of the values. False if none of them match. It also short circuits so on large lists this can be a lot faster.any函数的...
Perl may be copied only under the terms of either the Artistic Licenseorthe GNU General Public License, which may be foundinthe Perl5source kit. Complete documentationforPerl, including FAQ lists, should be foundonthissystemusing"man perl"or"perldoc perl". If you have access to the ...