大约有 40,000 项符合查询结果(耗时:0.0317秒) [XML]

https://stackoverflow.com/ques... 

Accessing dict keys like an attribute?

...__init__(*args, **kwargs) self.__dict__ = self Some pros: It actually works! No dictionary class methods are shadowed (e.g. .keys() work just fine. Unless - of course - you assign some value to them, see below) Attributes and items are always in sync Trying to access non-existent key as an...
https://stackoverflow.com/ques... 

Is there a way to detach matplotlib plots so that the computation can continue?

... Use matplotlib's calls that won't block: Using draw(): from matplotlib.pyplot import plot, draw, show plot([1,2,3]) draw() print('continue computation') # at the end call show to ensure window won't close. show() Using interactive mode: from...
https://stackoverflow.com/ques... 

How do I use PHP namespaces with autoload?

... $class parameter of autoload is the class name as written in constructor call. – tishma Feb 6 '13 at 12:29 1 ...
https://stackoverflow.com/ques... 

How can I add new keys to a dictionary?

...ted to strings). dict.update can also take another dictionary, but I personally prefer not to explicitly create a new dictionary in order to update another one. – bgusach Feb 13 '19 at 8:38 ...
https://stackoverflow.com/ques... 

Zooming MKMapView to fit annotation pins?

...ew.h: // Position the map such that the provided array of annotations are all visible to the fullest extent possible. - (void)showAnnotations:(NSArray *)annotations animated:(BOOL)animated NS_AVAILABLE(10_9, 7_0); share ...
https://stackoverflow.com/ques... 

Converting string from snake_case to CamelCase in Ruby

...equire "active_support/core_ext/string" is suffice, providing Rails is installed already. – Masa Sakano Jun 23 '18 at 2:03 add a comment  |  ...
https://stackoverflow.com/ques... 

Installing Java on OS X 10.9 (Mavericks)

I have installed the JDK on Mac OS X v10.8 (Mountain Lion). When I upgraded it to Mac OS X v10.9 (Mavericks) and ran java -version in the terminal, it showed: ...
https://stackoverflow.com/ques... 

Rails :include vs. :joins

...de functionality was changed with Rails 2.1. Rails used to do the join in all cases, but for performance reasons it was changed to use multiple queries in some circumstances. This blog post by Fabio Akita has some good information on the change (see the section entitled "Optimized Eager Loading")....
https://stackoverflow.com/ques... 

Binding an enum to a WinForms combo box, and then setting it

...dView.CurrentRow.Cells["comboColumnCell"].Value. I can see value but internally it throws null pointer exception – ssal Jun 5 '14 at 17:18 ...
https://stackoverflow.com/ques... 

Do I set properties to nil in dealloc when using ARC?

... Short answer: no, you do not have to nil out properties in dealloc under ARC. Long answer: You should never nil out properties in dealloc, even in manual memory management. In MRR, you should release your ivars. Nilling out properties means calling setters, which may invoke code that...