大约有 42,000 项符合查询结果(耗时:0.0728秒) [XML]

https://stackoverflow.com/ques... 

Django dynamic model fields

... their own data fields (via the admin) to collect additional data in forms and report on the data. The latter bit makes JSONField not a great option, so instead I have the following solution: ...
https://stackoverflow.com/ques... 

Const before or const after?

... why is there two correct ways of specifying const data and in what situation would you prefer or need one over the other if any? Essentially, the reason that the position of const within specifiers prior to an asterisk does not matter is that the C grammar was defined that way ...
https://stackoverflow.com/ques... 

Why use Ruby's attr_accessor, attr_reader and attr_writer?

Ruby has this handy and convenient way to share instance variables by using keys like 5 Answers ...
https://stackoverflow.com/ques... 

std::vector versus std::array in C++

What are the difference between a std::vector and an std::array in C++? When should one be preferred over another? What are the pros and cons of each? All my textbook does is list how they are the same. ...
https://stackoverflow.com/ques... 

MongoDb query condition on comparing 2 fields

I have a collection T , with 2 fields: Grade1 and Grade2 , and I want to select those with condition Grade1 > Grade2 , how can I get a query like in MySQL? ...
https://stackoverflow.com/ques... 

ResourceDictionary in a separate assembly

...blies, but it's better if I compile these resources in one single assembly and have my applications reference it, right? 6...
https://stackoverflow.com/ques... 

How do you produce a .d.ts “typings” definition file from an existing JavaScript library?

I'm using a lot of libraries both my own and 3rd party. I see the "typings" directory contains some for Jquery and WinRT... but how are they created? ...
https://stackoverflow.com/ques... 

Default background color of SVG root element

...ser solution currently would be to stick a <rect> element with width and height of 100% and fill="red" as the first child of the <svg> element, for example: <rect width="100%" height="100%" fill="red"/> s...
https://stackoverflow.com/ques... 

Jelly Bean DatePickerDialog — is there a way to cancel?

...explanation of the issue. I'm not sure if I should edit the other question and paste this content there, but I'm not comfortable changing someone else's question too much. --- ...
https://stackoverflow.com/ques... 

How can I make a time delay in Python? [duplicate]

...l... it'll print less frequently than that, because it takes time to print and handle all the buffers that entails (possibly doing a kernel context switch), and to register the alarm signal, but... yeah. A little under once per minute. – Parthian Shot Jun 17 '1...