perl - 在使用“strict refs”时，不能使用字符串（“1”）作为子例程 ref

Question

我知道这是Can't use string ("1") as a subroutine ref while "strict refs" in use 但我不知道调用调度表的问题是什么。代码似乎执行了，但日志中出现以下错误：Can't use string ("1") as a subroutine ref while "strict refs" in use at C:/filepath/file.pl line 15.

#! C:\strawberry\perl\bin\perl

use strict;
use warnings;
use Custom::MyModule;
use CGI ':standard'; 

my $dispatch_table = {
      getLRFiles => \&Custom::MyModule::getLRFiles,
      imageMod => \&Custom::MyModule::imageMod,
      # More functions
  };

my $perl_function = param("perl_function");
($dispatch_table->{$perl_function}->(\@ARGV) || sub {})->(); # Error occurs on this line

我不确定这是否与我正在使用自定义模块这一事实有关，这可能是一些愚蠢的事情，因为我对 Perl 不是非常熟悉，但任何帮助将不胜感激！

Answer 1

($dispatch_table->{$perl_function}->(\@ARGV) || sub {})->();

和

my $x = $dispatch_table->{$perl_function}->(\@ARGV);
($x || sub {})->(); # $x is probably not code ref

尝试，

($dispatch_table->{$perl_function} || sub {})->(\@ARGV);

也许

$_ and $_->(\@ARGV) for $dispatch_table->{$perl_function};