大约有 40,000 项符合查询结果(耗时:0.0535秒) [XML]

https://stackoverflow.com/ques... 

WPF: How to programmatically remove focus from a TextBox

...oard, for example. It does cause the caret to disappear, which is probably all that "keyboard focus" entails. Maybe I'm more interested in something like "mouse focus." – Grault Mar 3 '16 at 22:16 ...
https://stackoverflow.com/ques... 

How to find whether or not a variable is empty in Bash

...variable is undefined and the set -u option (nounset) is activated. Almost all other answers to this question will fail with unbound variable in this case. – anol May 26 '15 at 16:29 ...
https://stackoverflow.com/ques... 

How to randomly pick an element from an array

... history. If it haven't, it's extremely predictable. It's not a problem at all in this case — but it should be mentioned that array[(int)(System.currentTimeMillis() % array.length)] is just as good as the proposed solution. – alf Nov 9 '11 at 13:42 ...
https://stackoverflow.com/ques... 

git - pulling from specific branch

... Personally I am interested in the flow when I want to pull one specific branch from origin that hasn't been fetched yet and put those object on separate branch, so my current branch is not merged with what I'm pulling. ...
https://stackoverflow.com/ques... 

Correct way to pause Python program

... This is Windows specific, whereas all of the existing answers are platform independent. – lvc Oct 2 '15 at 14:26 add a comment ...
https://stackoverflow.com/ques... 

Do I need Content-Type: application/octet-stream for file download?

... This was a great answer, and it would really be nice if things worked like that. But unfortunately all browsers are mostly broken. For instance, Google Chrome will not open a "file save" window for you if this is your response from a form, regardless of including "...
https://stackoverflow.com/ques... 

Get the current user, within an ApiController action, without passing the userID as a parameter

...s have shown that using static properties to access request context causes all kinds of architectural problems. It's convenient at first but it causes soooooo much pain long term. – Darrel Miller Aug 28 '18 at 13:44 ...
https://stackoverflow.com/ques... 

How to list only top level directories in Python?

...use: os.walk('.').next()[1] How this works os.walk is a generator and calling next will get the first result in the form of a 3-tuple (dirpath, dirnames, filenames). Thus the [1] index returns only the dirnames from that tuple. ...
https://stackoverflow.com/ques... 

How to set JFrame to appear centered, regardless of monitor resolution? [closed]

... I know this answer is really old but is there any possible way to do this in a static context? I'm deciding between working towards that or just dropping the public static void main(String[] args) that I for whatever reason wanted to use. ...
https://stackoverflow.com/ques... 

LLVM vs clang on OS X

... LLVM originally stood for "low-level virtual machine", though it now just stands for itself as it has grown to be something other than a traditional virtual machine. It is a set of libraries and tools, as well as a standardized intermed...