大约有 40,000 项符合查询结果(耗时:0.0475秒) [XML]

https://stackoverflow.com/ques... 

How can I create a copy of an object in Python?

...would like to create a copy of an object. I want the new object to possess all properties of the old object (values of the fields). But I want to have independent objects. So, if I change values of the fields of the new object, the old object should not be affected by that. ...
https://stackoverflow.com/ques... 

LINQ Select Distinct with Anonymous Types

...on of objects. The exact type isn't important. From it I want to extract all the unique pairs of a pair of particular properties, thusly: ...
https://stackoverflow.com/ques... 

Get the latest record from mongodb collection

...1 means order opposite of the one that records are inserted in. Edit: For all the downvoters, above is a Mongoose syntax, mongo CLI syntax is: db.collectionName.find({}).sort({$natural:-1}).limit(1) share | ...
https://stackoverflow.com/ques... 

NSOperation vs Grand Central Dispatch

...ed first, but as of 10.5 and iOS 2, NSOperationQueue and friends are internally implemented using GCD. In general, you should use the highest level of abstraction that suits your needs. This means that you should usually use NSOperationQueue instead of GCD, unless you need to do something that NSOp...
https://stackoverflow.com/ques... 

How to get the client IP address in PHP [duplicate]

...se addresses are larger than the older IPv4 addresses. (Note that IPv6 usually uses 39 characters at most but there is also a special IPv6 notation for IPv4 addresses which in its full form can be up to 45 characters. So if you know what you are doing you can use 39 characters, but if you just want...
https://stackoverflow.com/ques... 

How to reload or re-render the entire page using AngularJS

...er to be able to switch contexts and re-render everything again (resending all $http requests, etc). If I just redirect the user somewhere else, things work properly: ...
https://stackoverflow.com/ques... 

Accessing Object Memory Address

When you call the object.__repr__() method in Python you get something like this back: 9 Answers ...
https://stackoverflow.com/ques... 

What is an alternative to execfile in Python 3?

It seems they canceled in Python 3 all the easy way to quickly load a script by removing execfile() 12 Answers ...
https://stackoverflow.com/ques... 

Access data in package subdirectory

...robust code that can access the subdirectory regardless of where it is installed on the user's system. 6 Answers ...
https://stackoverflow.com/ques... 

Media Player called in state 0, error (-38,0)

... You need to call mediaPlayer.start() in the onPrepared method by using a listener. You are getting this error because you are calling mediaPlayer.start() before it has reached the prepared state. Here is how you can do it : mp.setDataSo...