大约有 45,000 项符合查询结果(耗时:0.0453秒) [XML]

https://stackoverflow.com/ques... 

What is memory fragme<em>nem>tatio<em>nem>?

... symptom of memory fragme<em>nem>tatio<em>nem> is that you try to allocate a large block <em>a<em>nem>dem> you ca<em>nem>'t, eve<em>nem> though you appear to have e<em>nem>ough memory free. A<em>nem>other p<em>osem>sible co<em>nem>seque<em>nem>ce is the i<em>nem>ability of the process to release memory back to the <em>OSem> (because each of the large blocks it has allocated from the <em>OSem>, f...
https://stackoverflow.com/ques... 

What's the fastest way to merge/joi<em>nem> data.frames i<em>nem> R?

...he first. If there are duplicates i<em>nem> the seco<em>nem>d data frame the<em>nem> the match <em>a<em>nem>dem> merge approaches are <em>nem>ot the same. Match is, of course, faster si<em>nem>ce it is <em>nem>ot doi<em>nem>g as much. I<em>nem> particular it <em>nem>ever looks for duplicate keys. (co<em>nem>ti<em>nem>ued after code) DF1 = data.frame(a = c(1, 1, 2, 2), b = 1:4) DF2 = da...
https://stackoverflow.com/ques... 

I<em>nem>li<em>nem>e labels i<em>nem> Matplotlib

...below). This ca<em>nem> be very fiddly, because I have to specify coordi<em>nem>ates by h<em>a<em>nem>dem>, <em>a<em>nem>dem>, if I re-format the plot, I probably have to rep<em>osem>itio<em>nem> the labels. Is there a way to automatically ge<em>nem>erate labels o<em>nem> curves i<em>nem> Matplotlib? Bo<em>nem>us poi<em>nem>ts for bei<em>nem>g able to orie<em>nem>t the text at a<em>nem> a<em>nem>gle correspo<em>nem>di<em>nem>g to...
https://stackoverflow.com/ques... 

Duplicate ID, tag <em>nem>ull, or pare<em>nem>t id with a<em>nem>other fragme<em>nem>t for com.google.<em>a<em>nem>dem>roid.gms.maps.MapFragme

... The a<em>nem>swer Matt suggests works, but it cause the map to be recreated <em>a<em>nem>dem> redraw<em>nem>, which is<em>nem>'t always desirable. After lots of trial <em>a<em>nem>dem> error, I fou<em>nem>d a solutio<em>nem> that works for me: private static View view; @Override public View o<em>nem>CreateView(LayoutI<em>nem>flater i<em>nem>flater, ViewGroup co<em>nem>tai<em>nem>er, Bu<em>nem>d...
https://stackoverflow.com/ques... 

Save bitmap to locatio<em>nem>

...fu<em>nem>ctio<em>nem> to dow<em>nem>load a<em>nem> image from a web server, display it o<em>nem> the scree<em>nem>, <em>a<em>nem>dem> if the user wishes to keep the image, save it o<em>nem> the SD card i<em>nem> a certai<em>nem> folder. Is there a<em>nem> easy way to take a bitmap <em>a<em>nem>dem> just save it to the SD card i<em>nem> a folder of my choice? ...
https://stackoverflow.com/ques... 

Ope<em>nem> a buffer as a vertical split i<em>nem> VIM

If you are editi<em>nem>g a file i<em>nem> VIM <em>a<em>nem>dem> the<em>nem> you <em>nem>eed to ope<em>nem> a<em>nem> existi<em>nem>g buffer (e.g. from your buffer list: :buffers ) how ca<em>nem> you ope<em>nem> it i<em>nem> a vertical split? ...
https://stackoverflow.com/ques... 

How to go about formatti<em>nem>g 1200 to 1.2k i<em>nem> java

... Here is a solutio<em>nem> that works for a<em>nem>y lo<em>nem>g value <em>a<em>nem>dem> that I fi<em>nem>d quite readable (the core logic is do<em>nem>e i<em>nem> the bottom three li<em>nem>es of the format method). It leverages TreeMap to fi<em>nem>d the appropriate suffix. It is surprisi<em>nem>gly more efficie<em>nem>t tha<em>nem> a previous solutio<em>nem> I wrote t...
https://stackoverflow.com/ques... 

How ca<em>nem> I list (ls) the 5 last modified files i<em>nem> a directory?

...ed files: ls -1t | head -5 The -1 (that's a o<em>nem>e) says o<em>nem>e file per li<em>nem>e <em>a<em>nem>dem> the head says take the first 5 e<em>nem>tries. If you wa<em>nem>t the last 5 try ls -1t | tail -5 share | improve this a<em>nem>swer ...
https://stackoverflow.com/ques... 

Try-fi<em>nem>ally block preve<em>nem>ts StackOverflowError

...<em>nem> from the i<em>nem>vocatio<em>nem> of foo() i<em>nem>side the try, you call foo() from fi<em>nem>ally <em>a<em>nem>dem> start recursi<em>nem>g agai<em>nem>. Whe<em>nem> that causes a<em>nem>other exceptio<em>nem>, you'll call foo() from a<em>nem>other i<em>nem><em>nem>er fi<em>nem>ally(), <em>a<em>nem>dem> so o<em>nem> alm<em>osem>t ad i<em>nem>fi<em>nem>itum. share ...
https://stackoverflow.com/ques... 

what happe<em>nem>s whe<em>nem> you type i<em>nem> a URL i<em>nem> browser [cl<em>osem>ed]

... Atte<em>nem>tio<em>nem>: this is a<em>nem> extremely rough <em>a<em>nem>dem> oversimplified sketch, assumi<em>nem>g the simplest p<em>osem>sible HTTP request (<em>nem>o HTTPS, <em>nem>o HTTP2, <em>nem>o extras), simplest p<em>osem>sible D<em>Nem>S, <em>nem>o proxies, si<em>nem>gle-stack IPv4, o<em>nem>e HTTP request o<em>nem>ly, a simple HTTP server o<em>nem> the other e<em>nem>d, <em>a<em>nem>dem> <em>nem>...