大约有 44,000 项符合查询结果(耗时:0.0501秒) [XML]

https://stackoverflow.com/ques... 

Why is MATLAB so fast in matrix multiplication?

...lementation of BLAS routines which were more and more efficient. I don't know all the historical implementations (I was not born or a kid back then), but two of the most notable ones came out in the early 2000s: the Intel MKL and GotoBLAS. Your Matlab uses the Intel MKL, which is a very good, optim...
https://stackoverflow.com/ques... 

move_uploaded_file gives “failed to open stream: Permission denied” error

...dy /var/www/html/mysite/tmp_file_upload/ Chmod images and tmp_file_upload now to be writable by the owner, if needed [Seems you already have this in place]. Mentioned in @Dmitry Teplyakov answer. $ sudo chmod -R 0755 /var/www/html/mysite/images/ $ sudo chmod -R 0755 /var/www/html/mysite/tmp_file_...
https://stackoverflow.com/ques... 

Clicking the back button twice to exit an activity

...uple of seconds after the app closes? No one cares to cancel the toast? I know it may be a small detail but I think that should happen. What do you guys think? – acrespo Jul 1 '14 at 21:32 ...
https://stackoverflow.com/ques... 

Check if a string is a date value

What is an easy way to check if a value is a valid date, any known date format allowed. 20 Answers ...
https://stackoverflow.com/ques... 

How to read multiple text files into a single RDD?

... @femibyte I don't think so, though I don't know why you would want to know the file name in any situation other than for wholeTextFiles. What is your use case? I can think of a workaround provided you use the same number of partitions as files ... ...
https://stackoverflow.com/ques... 

How to flush output of print function?

...t line from (something like) #!/usr/bin/python3 to #!/usr/bin/python3 -u - now when you run your script (e.g. ./my_script.py) the -u will always be added for you – James Sep 7 at 17:22 ...
https://stackoverflow.com/ques... 

How to sort an array of objects by multiple fields?

... @Mike: Ok... finally ;) You see it is more complex now, as the options are preprocessed, but the final comparison function (see comment) is much simpler which (hopefully) leads to better performance. The more sorting options you have, the more advantage you have from this met...
https://stackoverflow.com/ques... 

Build error: You must add a reference to System.Runtime

... This issue crept into a MVC project targeting 4.52, no known PCL but many nuGet packages. I believe that uninstalling VS2013 triggered this but I do not know that as fact. Error only surfaced in Views that referenced X-PagedList. Adding reference to project web.config (not views...
https://stackoverflow.com/ques... 

How to upgrade Git on Windows to the latest version?

... I don't know why this is so downvoted - it is the correct answer for how to update Git on Windows. – OrangeDog May 3 '18 at 12:40 ...
https://stackoverflow.com/ques... 

How can I delete all Git branches which have been merged?

...rep -v develop | sed 's/origin\///' | xargs -n 1 git push --delete origin. Now this turned out to be my alias. – sarat Aug 15 '15 at 12:19 ...