Notice that sum() is dealing with native Perl scalars and returning a Perl scalar.

注意到sum()处理本地的Perl标量，并返回一个 Perl 标量。

youdao

Notice that sum() is dealing with native Perl scalars and returning a Perl scalar.

注意到sum()处理本地的Perl标量，并返回一个 Perl 标量。

youdao