#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
Pass by Reference Prototypes Constant Functions Overriding Built-in Functions Autoloading Subroutine Attributes SEE ALSO NAME perlsub - Perl subroutines SYNOPSIS To declare subroutines: sub NAME; # A "forward" declaration. sub NAME(PROTO); # ditto, but with prototypes sub NAME : ATTRS;...
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 ...
参看 Pass by Reference,里面有针对此问题的讨论,以及perlref 里面有参考值的资讯。 传递变数和函数 一般的变数和函数是相当简单的:只要传一个指向现存的匿名变数或函数的参考值 即可:<PRE>func( \$some_scalar );</PRE><PRE>func( \$some_array ); func( [ 1 .. 10 ] );</PRE><PRE>func( \%some...
在 PHP 和 Bash 中,两种引号都能包含字符串。...通过对象 Reference 传递大多数编程语言的函数参数传递是传值。如果函数改变了值,结果不会传递回调用代码。但正如我解释过的,Python 偏偏要有所不同。...Python 默认使用 pass-by-object-reference 来传递函数参数。这意味着改变源变量可能最终会改变值。这是...
下面是我所做的事情的一个片段:{ #Push value onto array #Pass by reference print @arr 浏览2提问于2015-10-27得票数 3 回答已采纳 1回答 Perl的哪个版本引入了词法我的子程序? 、、 根据的说法,我的一个模块在旧的Perls上生成这个错误, 我也应该设置我的最低perl版本吗? 浏览5提问于2021-07-03得票...
() Pass by Reference Prototypes Constant Functions Overriding Built-in Functions Autoloading Subroutine Attributes SEE ALSO perlfunc - Perl builtin functions DESCRIPTION Perl Functions by Category Functions for SCALARs or strings , Regular expressions and pattern matching , Numeric functions , Functions ...
We can also use a variable to store a reference to the data structure that is being blessed as our object: sub new { my $class = shift; my $self = {}; bless $self, $class; return $self; } Once we've blessed the hash referred to by$selfwe can start calling methods on it. Th...
Global Perl Reference DocumentationCkGlobalCurrent Version: 11.0.0No License Required for CkGlobalProvides a means for updating global settings that affect all types of Chilkat objects across all instances.Object Creation $obj = chilkat::CkGlobal->new();...
To solve either or both of these problems, we need pass by reference rather than pass by value. And that’s just what the doctor (or Professor) ordered. PeGS: Perl Graphical Structures Before we get started with references, however, we want to introduce Perl Graphical Structures, or PeGS....