大约有 42,000 项符合查询结果(耗时:0.0336秒) [XML]

https://stackoverflow.com/ques... 

Environment variable to control java.io.tmpdir?

... Hmmm -- since this is handled by the JVM, I delved into the OpenJDK VM source code a little bit, thinking that maybe what's done by OpenJDK mimics what's done by Java 6 and prior. It isn't reassuring that there's a way to do this other than on Win...
https://stackoverflow.com/ques... 

How do I determine k when using k-means clustering?

I've been studying about k-means clustering , and one thing that's not clear is how you choose the value of k. Is it just a matter of trial and error, or is there more to it? ...
https://stackoverflow.com/ques... 

Quickly create large file on a Windows system

...m. By large I'm thinking 5 GB. The content doesn't matter. A built-in command or short batch file would be preferable, but I'll accept an application if there are no other easy ways. ...
https://stackoverflow.com/ques... 

How do I keep the screen on in my App? [duplicate]

For my Android app I never want the phone to lock or the back light to turn off 11 Answers ...
https://stackoverflow.com/ques... 

How do I find out what keystore my JVM is using?

...les---> JAVA_HOME Your server startup batch files. In your import command -keystore cacerts (give full path to the above JRE here instead of just saying cacerts). share | improve this answer ...
https://stackoverflow.com/ques... 

rsync error: failed to set times on “/foo/bar”: Operation not permitted

I'm getting a confusing error from rsync and the initial things I'm finding from web searches (as well as all the usual chmod'ing) are not solving it: ...
https://stackoverflow.com/ques... 

Remove all special characters from a string [duplicate]

...with URLs, I want to be able to convert titles that could contain anything and have them stripped of all special characters so they only have letters and numbers and of course I would like to replace spaces with hyphens. ...
https://stackoverflow.com/ques... 

Fade/dissolve when changing UIImageView's image

... animation methods. Suppose the following code is in the view controller, and the UIImageView you want to cross-dissolve is a subview of self.view addressable via the property self.imageView Then all you need is: UIImage * toImage = [UIImage imageNamed:@"myname.png"]; [UIView transitionWit...
https://stackoverflow.com/ques... 

What Ruby IDE do you prefer? [closed]

I've been using Eclipse with RDT (not RadRails) a lot lately, and I'm quite happy with it, but I'm wondering if you guys know any decent alternatives. I know NetBeans also supports Ruby these days, but I'm not sure what it has to offer over Eclipse. ...
https://stackoverflow.com/ques... 

Running Composer returns: “Could not open input file: composer.phar”

I am new to symfony2 and reading symblog . In third chapter while trying with data-fixtures I tried the command: 36 Answe...