大约有 42,000 项符合查询结果(耗时:0.0709秒) [XML]

https://stackoverflow.com/ques... 

Python loop that also accesses previous and next values

How can I iterate over a list of objects, accessing the previous, current, and next items? Like this C/C++ code, in Python? ...
https://stackoverflow.com/ques... 

How do I use arrays in C++?

...sed virtually everywhere. C++ provides abstractions that are easier to use and less error-prone ( std::vector<T> since C++98 and std::array<T, n> since C++11 ), so the need for arrays does not arise quite as often as it does in C. However, when you read legacy code or interact with a...
https://stackoverflow.com/ques... 

What should every JavaScript programmer know? [closed]

...ul, but they are often hiding the sometimes-ugly details of how JavaScript and the DOM actually work from you. If your aim is to be able to say “I know JavaScript”, then investing a lot of time in a framework is opposed to that. Here are some JavaScript language features that you should know to...
https://stackoverflow.com/ques... 

What's the canonical way to check for type in Python?

... str (exclude subclasses): if type(o) is str: The following also works, and can be useful in some cases: if issubclass(type(o), str): See Built-in Functions in the Python Library Reference for relevant information. One more note: in this case, if you're using Python 2, you may actually want t...
https://stackoverflow.com/ques... 

Android splash screen image sizes to fit all devices

... have a full screen PNG I want to display on splash. Only one error there, and I have no idea what size to put in every drawable folder ( ldpi , mdpi , hdpi , and xhdpi ). My application is supposed to run good and beautiful on all phones and tablets. What sizes (in pixels) should I create so the...
https://stackoverflow.com/ques... 

What's the difference between RSpec and Cucumber? [closed]

...rience. I've built a web application that's in use now with authentication and authorization and postgresql db. 1 Answer ...
https://stackoverflow.com/ques... 

Disabling browser print options (headers, footers, margins) from page?

I have seen this question asked in a couple of different ways on SO and several other websites, but most of them are either too specific or out-of-date. I'm hoping someone can provide a definitive answer here without pandering to speculation. ...
https://stackoverflow.com/ques... 

Multiple DB Contexts in the Same DB and Application in EF 6 and Code First Migrations

...t uses EF 6. I am using Code First Migrations. I am using Areas in the app and would like to have different DbContexts in each area to break it up. I know EF 6 has ContextKey, but I can't find complete information on how to use it. Currently I can only use migrations one context at a time. ...
https://stackoverflow.com/ques... 

How to Deal with Temporary NSManagedObject instances?

I need to create NSManagedObject instances, do some stuff with them and then trash them or store to sqlite db. The problem is, I cannot create instances of NSManagedObject unconnected to NSManagedObjectContext and this means I have to clear up somehow after I decide that I don't need some of ...
https://stackoverflow.com/ques... 

comparing sbt and Gradle [closed]

I am diving into Scala and noticed sbt. I have been quite happy with Gradle in java/groovy projects, and I know there's a scala plugin for Gradle. ...