大约有 47,000 项符合查询结果(耗时:0.0484秒) [XML]

https://stackoverflow.com/ques... 

Python assigning multiple variables to same value? list behavior

...t element of a to 1, the first elements of b and c are 1. If you want to know if two names are naming the same object, use the is operator: >>> a=b=c=[0,3,5] >>> a is b True You then ask: what is different from this? d=e=f=3 e=4 print('f:',f) print('e:',e) Here, you'r...
https://stackoverflow.com/ques... 

How to convert local time string to UTC?

... NOTE -- As of 2020 you should not be using .utcnow() or .utcfromtimestamp(xxx). As you've presumably moved on to python3,you should be using timezone aware datetime objects. >>> from datetime import timezone >>> dt_now = datetime.now(tz=timezone.utc) &g...
https://stackoverflow.com/ques... 

How to get an array of unique values from an array containing duplicates in JavaScript? [duplicate]

... It's 2014 now, so we need semicolons again. – tacone Jan 8 '14 at 17:35 56 ...
https://stackoverflow.com/ques... 

ADB Android Device Unauthorized

...k if you are agree to connect the computer id. You need to confirm it. 5. Now Check the device It is now authorized! adb devices <ANDROID_SDK_HOME>\platform-tools>adb devices List of devices attached 4df798d76f98cf6d device ...
https://stackoverflow.com/ques... 

Node: log in a file instead of the console

...This was written around Node v0.2 and v0.4; There are much better utilites now around logging. I highly recommend Winston Update Late 2013 - We still use winston, but now with a logger library to wrap the functionality around logging of custom objects and formatting. Here is a sample of our logger....
https://stackoverflow.com/ques... 

JavaScript data grid for millions of rows [closed]

... (Disclaimer: I am the author of SlickGrid) UPDATE This has now been implemented in SlickGrid. Please see http://github.com/mleibman/SlickGrid/issues#issue/22 for an ongoing discussion on making SlickGrid work with larger numbers of rows. The problem is that SlickGrid does not virtu...
https://stackoverflow.com/ques... 

how to make twitter bootstrap submenu to open on the left side?

...on and my answer are from august 2012. Meanwhile, Bootstrap is changed, so now you have .pull-left class. Back then, my answer was correct. Now you don't have to manually set css, you have that .pull-left class. – Miljan Puzović Mar 2 '14 at 19:58 ...
https://stackoverflow.com/ques... 

Generating a drop down list of timezones with PHP

...eported a bug for the same error as Xeoncross and was wondering if anyone knows how this is possible? The manual seems to indicate that these constants are available since PHP5.2 but is this incorrect? – brendo Apr 8 '11 at 1:20 ...
https://stackoverflow.com/ques... 

Determining complexity for recursive functions (Big O notation)

...nd I need help determining the complexity of these recursive functions. I know how to solve simple cases, but I am still trying to learn how to solve these harder cases. These were just a few of the example problems that I could not figure out. Any help would be much appreciated and would greatly he...
https://stackoverflow.com/ques... 

What is the difference between include and extend in Ruby?

...class (i.e. the singleton class) e.g. if you call Klazz.extend(Mod), now Klazz has Mod's methods (as class methods) if you call obj.extend(Mod), now obj has Mod's methods (as instance methods), but no other instance of of obj.class has those methods added. extend is a public method include -...