小编jus*_*vin的帖子

标题几乎说了.我有两个JSON对象,我想知道它们是否相等(具有所有相同的属性值).

我可以对它们进行字符串化,但我不确定两个相等的对象是否总能产生相同的输出:

例如:

{
    "firstName": "John",
    "lastName": "Smith",
    "age": 25,
    "favoriteColors": ["blue", "green", "red"]
}

是一个不同的字符串:

{
    "age": 25,
    "lastName": "Smith",
    "firstName": "John",
    "favoriteColors": ["blue", "green", "red"]
}

但作为对象,它们具有相同的属性.

我正在尝试将元素从泛型类型(ShipModule)列表复制到另一个不同但兼容类型的列表(IRepairable).

    List<ShipModule> modules = new List<ShipModule>();
    // Add some modules...

    List<IRepairable> repairables;
    repairables = new List<IRepairable>();

    // This is an error:
    repairables.AddRange(modules);

    // So is this:
    repairables = new List<IRepairable>(modules);

    // This is okay:
    foreach(ShipModule module in modules) {
        repairables.Add(module);
    }

ShipModule实现了IRepairable,因此可以安全地添加所有元素,但我不能使用复制构造函数或AddRange.为什么？

使用Java的Nashorn脚本引擎,我可以使用如下所示的绑定在eval()的上下文中提供对象:

Bindings bindings = scriptContext.getBindings(ScriptContext.ENGINE_SCOPE);
bindings.put("rules", myObj); 
scriptEngine.eval("rules.someMethod('Hello')", scriptContext);

我希望能够通过提供一个默认对象来简化javascript,以便代替javascript:

rules.someMethod('Hello')

我可以写:

someMethod('Hello')

有没有办法实现这个目标？(someMethod是对象的方法,而不是静态方法)

我正在尝试运行Adobe的示例python策略服务器脚本,链接到这里:http://www.adobe.com/devnet/flashplayer/articles/socket_policy_files.html

我收到以下错误:

 # python flashpolicyd.py --file=policy.xml

 File "flashpolicyd.py", line 40
   with file(path, 'rb') as f:
           ^
 SyntaxError: invalid syntax

在上下文中:

class policy_server(object):
def __init__(self, port, path):
    self.port = port
    self.path = path
    self.policy = self.read_policy(path)
    self.log('Listening on port %d\n' % port)
    try:
        self.sock = socket.socket(socket.AF_INET6, socket.SOCK_STREAM)
    except AttributeError:
        # AttributeError catches Python built without IPv6
        self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    except socket.error:
        # socket.error catches OS with IPv6 disabled
        self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    self.sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
    self.sock.bind(('', port)) …