大约有 13,071 项符合查询结果(耗时:0.0320秒) [XML]

https://stackoverflow.com/ques... 

List distinct values in a vector in R

How can I list the distinct values in a vector where the values are replicative? I mean, similarly to the following SQL statement: ...
https://stackoverflow.com/ques... 

how to override left:0 using CSS or Jquery?

... The default value for left is auto, so just set it to that and you will "reset" it. .elem { left: auto; } Make sure that the above comes after the original CSS file. ...
https://stackoverflow.com/ques... 

Unable to access JSON property with “-” dash

I am unable to retrieve a value from a json object when the string has a dash character: 3 Answers ...
https://stackoverflow.com/ques... 

Using headers with the Python requests library's get method

So I recently stumbled upon this great library for handling HTTP requests in Python; found here http://docs.python-requests.org/en/latest/index.html . ...
https://stackoverflow.com/ques... 

How do I escape a percentage sign in T-SQL?

This question also has the answer , but it mentions DB2 specifically. 4 Answers 4 ...
https://stackoverflow.com/ques... 

What are the parameters sent to .fail in jQuery?

I can’t find the documentation on what the names of the three parameters are when $.ajax fails. 2 Answers ...
https://stackoverflow.com/ques... 

Index on multiple columns in Ruby on Rails

I'm implementing functionality to track which articles a user has read. 2 Answers 2 ...
https://stackoverflow.com/ques... 

How can I determine whether a Java class is abstract by reflection

I am interating through classes in a Jar file and wish to find those which are not abstract. I can solve this by instantiating the classes and trapping InstantiationException but that has a performance hit as some classes have heavy startup. I can't find anything obviously like isAbstract() in the C...
https://stackoverflow.com/ques... 

How do I remove the border around a focused contenteditable pre?

When I set a pre element to contenteditable and put focus in it for editing, it receives a dotted border around it that doesn't look very nice. The border isn't there when focus is somewhere else. How do I remove that border? ...
https://stackoverflow.com/ques... 

Pull remote branch into local repo with different name?

Alright I did a little bit of research on this but I couldn't find an exact answer, so I have to ask. 2 Answers ...