我被要求修改一些现有代码以添加一些附加功能。我在Google上搜索过,似乎找不到答案。我有这样的事情…
%first_hash = gen_first_hash(); %second_hash = gen_second_hash(); do_stuff_with_hashes(%first_hash,%second_hash); sub do_stuff_with_hashes { my %first_hash = shift; my %second_hash = shift; # do stuff with the hashes }
我收到以下错误:
Odd number of elements in hash assignment at ./gen.pl line 85. Odd number of elements in hash assignment at ./gen.pl line 86. Use of uninitialized value in concatenation (.) or string at ./gen.pl line 124. Use of uninitialized value in concatenation (.) or string at ./gen.pl line 143.
第85行和第86行是子程序中的前两行,124和143是我访问哈希的位置。当我查看这些错误时,似乎表明我的哈希值未初始化。但是,我可以验证散列值是否具有值。为什么我得到这些错误?