Example 3: Pass the Array Reference into a Subroutine Create a Perl file with the following script where the reference variable of the array is sent as the argument of the subroutine. The value of the third index of the array is updated using the reference variable inside the subroutine. The...
《Effective Perl:编写高质量Perl代码的有效方法(第2版)英文版》是2016年电子工业出版社出版的图书,作者是Joseph N.Hall(霍尔),Joshua A.McAdams(麦克亚当斯),brian d foy(福瓦)。内容简介 《EffectivePerl:编写高质量Perl代码的有效方法(第2版)(英文版)》是Perl编程领域的“圣经...
my@array=(); #Pass by reference readLine($argument1,\@array); print@array;#Prints 0 } 我是Perl的新手,所以如果我做的正确,请告诉我。 我阅读了类似问题的答案,但仍然无法为我打印正确的值(1)。 我安装了最新版本的Perl。 原始数组不会被修改,因为您正在将其副本复制到readLine()中的@array中。 您...
Anonymous hash and array constructors The anonymous hash and array constructors now take 1 op in the optree instead of 3, now that pp_anonhash and pp_anonlist return a reference to an hash/array when the op is flagged with OPf_SPECIAL. (Nicholas Clark) --- Known Problems There's stil...
Anonymous hash and array constructors The anonymous hash and array constructors now take 1 op in the optree instead of 3, now that pp_anonhash and pp_anonlist return a reference to an hash/array when the op is flagged with OPf_SPECIAL. (Nicholas Clark) Known Problems There's still a ...
The -> is the "infix dereference operator". In other words it is the means by which one calls a sub with a pass by reference (among other things you can do with ->). As stated above most things in calls to perl/Tk routines are passed by reference. The -> is used in perl just...
数组(Array):数组是Perl中的一种变量类型,它可以存储多个值。Perl函数可以接受数组作为参数,并对其进行操作。例如,可以编写一个函数来计算数组参数的总和。 哈希(Hash):哈希是Perl中的一种变量类型,它可以存储键值对。Perl函数可以接受哈希作为参数,并对其进行操作。例如,可以编写一个函数来查找哈希参数中指定键的值。
TAP::Parser::Iterator Internal base class for TAP::Parser Iterators TAP::Parser::Iterator::Array perl v5.12.5 Last change: 2014-06-17 25 Perl Programmers Reference Guide PERLMODLIB(1) Internal TAP::Parser array Iterator TAP::Parser::Iterator::Process Internal TAP::Parser Iterator TAP::Parser...
数组(Arrays):数组用 @ 定义,如 my @array=("a","b","c","d"); 访问数组的元素用 $array[1]。在 perl 中,数组也可以当做堆栈来处理,支持的操作符包括 pop 和 push,shft 和 unshift。两组操作的区别在于前者对数组的尾部进行处理,而 shift 和 unshift 则针对数组的头部进行处理。pop 得到的是数组的...
How to pass it to a sub? Common mistakes 第一种错误 for $i (1..10) { @array = somefunc($i); $AoA[$i] = @array; # WRONG! } # reference of array is needed # 此处需要指向数组的引用 Common mistakes 第二种错误 for $i (1..10) { @array = somefunc($i); $AoA[$i] = \...