大约有 45,000 项符合查询结果(耗时:0.0584秒) [XML]

https://stackoverflow.com/ques... 

Can't access object property, even though it shows up in a console log

...e the output from these two logs. The first clearly shows the full object with the property I'm trying to access, but on the very next line of code, I can't access it with config.col_id_3 (see the "undefined" in the screenshot?). Can anyone explain this? I can get access to every other property ex...
https://stackoverflow.com/ques... 

Underscore vs Double underscore with variables and methods [duplicate]

... E.g. from M import * does not import objects whose name starts with an underscore. single_trailing_underscore_: used by convention to avoid conflicts with Python keyword, e.g. Tkinter.Toplevel(master, class_='ClassName') __double_leading_underscore: when naming a class attribute,...
https://stackoverflow.com/ques... 

How do I use the conditional operator (? :) in Ruby?

How is the conditional operator ( ? : ) used in Ruby? 7 Answers 7 ...
https://stackoverflow.com/ques... 

What happens if I define a 0-size array in C/C++?

...e. ISO 9899:2011 6.7.6.2: If the expression is a constant expression, it shall have a value greater than zero. The above text is true both for a plain array (paragraph 1). For a VLA (variable length array), the behavior is undefined if the expression's value is less than or equal to zero (par...
https://stackoverflow.com/ques... 

How to implement a good __hash__ function in python [duplicate]

When implementing a class with multiple properties (like in the toy example below), what is the best way to handle hashing? ...
https://stackoverflow.com/ques... 

.htm vs .html ? Which file extension naming is more correct? [closed]

.... The choice is down to personal preference, provided you’re consistent with your file naming you won’t have a problem with either. Depending on the configuration of the web server, one of the file types will take precedence over the other. This should not be an issue since it’s unlikely that...
https://stackoverflow.com/ques... 

JavaScript editor within Eclipse [closed]

I'm looking for the best JavaScript editor available as an Eclipse plugin. I've been using Spket which is good. But, is there more better one? ...
https://stackoverflow.com/ques... 

Create a string of variable length, filled with a repeated character

So, my question has been asked by someone else in it's Java form here: Java - Create a new String instance with specified length and filled with specific character. Best solution? ...
https://stackoverflow.com/ques... 

Drawing a dot on HTML5 canvas [duplicate]

Drawing a line on the HTML5 canvas is quite straightforward using the context.moveTo() and context.lineTo() functions. ...
https://stackoverflow.com/ques... 

Light weight alternative to Hibernate? [closed]

...uld like to have store data in a light weight database such as Derby or Sqlite. I would like to use a data abstraction layer in my program. Hibernate appears to require a lot of configuration and is overkill for what I need. What are light weight alternatives to Hibernate? ...