大约有 20,401 项符合查询结果(耗时:0.0400秒) [XML]

https://stackoverflow.com/ques... 

Cleaning `Inf` values from an R dataframe

In R, I have an operation which creates some Inf values when I transform a dataframe. 8 Answers ...
https://stackoverflow.com/ques... 

Find column whose name contains a specific string

I have a dataframe with column names, and I want to find the one that contains a certain string, but does not exactly match it. I'm searching for 'spike' in column names like 'spike-2' , 'hey spike' , 'spiked-in' (the 'spike' part is always continuous). ...
https://stackoverflow.com/ques... 

Is it possible to use JS to open an HTML select to show its option list? [duplicate]

Is it possible to use JavaScript to open an HTML select to show its option list? 11 Answers ...
https://stackoverflow.com/ques... 

string.charAt(x) or string[x]?

Is there any reason I should use string.charAt(x) instead of the bracket notation string[x] ? 6 Answers ...
https://stackoverflow.com/ques... 

How to handle dependency injection in a WPF/MVVM application

I am starting a new desktop application and I want to build it using MVVM and WPF. 9 Answers ...
https://stackoverflow.com/ques... 

What does “Content-type: application/json; charset=utf-8” really mean?

When I make a POST request with a JSON body to my REST service I include Content-type: application/json; charset=utf-8 in the message header. Without this header, I get an error from the service. I can also successfully use Content-type: application/json without the ;charset=utf-8 portion. ...
https://stackoverflow.com/ques... 

Formatting Decimal places in R

I have a number, for example 1.128347132904321674821 that I would like to show as only two decimal places when output to screen (or written to a file). How does one do that? ...
https://stackoverflow.com/ques... 

How can I get device ID for Admob

I'm using Eclipse to develop applications for android, and I want to integrate Admob to make money. The tutorial says I should watch the LogCat to find ID, but where is it? ...
https://stackoverflow.com/ques... 

How to kill all processes with a given partial name? [closed]

I want to kill all processes that I get by: 14 Answers 14 ...
https://stackoverflow.com/ques... 

How to display long messages in logcat

I am trying to display long message on logcat. If the length of message is more than 1000 characters, it gets broken. 10 A...