我想知道如果下面的反省有可能在CPython的: >>> def potato(x=69):
... if x == 69 and ???:
... print '69 was taken from argument defaults'
... if x == 69 and ???:
... print '69 was passed as positional arg'
..
我有一个关于垃圾收集的问题,当一个对象看起来超出了范围,但仍然可以保持活着状态,因为其他类仍然持有对它的引用。请查看下面的代码。谢谢。 Public Class MainForm
Private Sub Work
Dim Obj1 as New DataTable
Dim Obj2 as New DataTable
Helper.TestMetho
我正在做以下事情,并且得到我认为“1”意味着声明很好。但我想取而代之的结果。 怎么了? #!/usr/bin/perl
use strict;
use DBI;
my $host = "test";
my $database = "dd";
my $port = 3306;
my $user = "uuu";
my $pw = "ppp";
my $mysql = DBI->