大约有 47,000 项符合查询结果(耗时:0.0662秒) [XML]

https://stackoverflow.com/ques... 

Why is there no logical xor in JavaScript?

... JavaScript traces its ancestry back to C, and C does not have a logical XOR operator. Mainly because it's not useful. Bitwise XOR is extremely useful, but in all my years of programming I have never needed a logical XOR. If you have two boolean variables you can mim...
https://stackoverflow.com/ques... 

How to detect if URL has changed after hash in JavaScript

... This, as I understand, works only for the change of the part after the # sign (hence the event name)? And not for full URL change, as seems to be implied by the question's title. – NPC May 27 '14 at 21:53...
https://stackoverflow.com/ques... 

How to add an empty column to a dataframe?

What's the easiest way to add an empty column to a pandas DataFrame object? The best I've stumbled upon is something like ...
https://stackoverflow.com/ques... 

How can I check in a Bash script if my local Git repository has changes?

...u're doing will almost work: you should quote $CHANGED in case it's empty, and -z tests for empty, which means no changes. What you meant was: if [ -n "$CHANGED" ]; then VN="$VN-mod" fi A quote from Git's GIT-VERSION-GEN: git update-index -q --refresh test -z "$(git diff-index --name-only HE...
https://stackoverflow.com/ques... 

What is “Service Include” in a csproj file for?

...ehavior is intentional. To support third-party test frameworks, like NUnit and XUnit, Visual Studio 2012 loaded Test Explorer on solution open, regardless of whether it contained test projects. This added seconds of delay to startup and solution open scenarios for all users, majority of whom don't u...
https://stackoverflow.com/ques... 

Installing R on Mac - Warning messages: Setting LC_CTYPE failed, using “C”

...e runs R in a docker environment (under root), try to run R with below command, LC_ALL=C.UTF-8 R # instead of just `R` share | improve this answer | follow | ...
https://stackoverflow.com/ques... 

Add legend to ggplot2 line plot

... about legends in ggplot2. I managed to plot three lines in the same graph and want to add a legend with the three colors used. This is the code used ...
https://stackoverflow.com/ques... 

Cleaning up old remote git branches

I work from two different computers (A and B) and store a common git remote in the dropbox directory. 9 Answers ...
https://stackoverflow.com/ques... 

Keyboard shortcut to comment lines in Sublime Text 3

...it was possible to comment out a line or a block of lines with Ctrl + / and Ctrl + Shift + / . According to the menu Edit > Comment these shortcuts should be valid, but in Sublime Text 3 (build 3047) they no longer seem to work. Does anybody know the right default keyboard shortcuts for Lin...
https://stackoverflow.com/ques... 

What is a Lambda?

...ne provide a good description of what a Lambda is? We have a tag for them and they're on the secrets of C# question, but I have yet to find a good definition and explanation of what they are in the first place. ...