大约有 44,000 项符合查询结果(耗时:0.0671秒) [XML]

https://stackoverflow.com/ques... 

Scatterplot with marginal histograms in ggplot2

...he sample below in ggplot2 ? In Matlab it is the scatterhist() function and there exist equivalents for R as well. However, I haven't seen it for ggplot2. ...
https://stackoverflow.com/ques... 

How to close Android application?

... Android has a mechanism in place to close an application safely per its documentation. In the last Activity that is exited (usually the main Activity that first came up when the application started) just place a couple of li...
https://stackoverflow.com/ques... 

How can I sort a dictionary by key?

... Standard Python dictionaries are unordered. Even if you sorted the (key,value) pairs, you wouldn't be able to store them in a dict in a way that would preserve the ordering. The easiest way is to use OrderedDict, which remembe...
https://stackoverflow.com/ques... 

How to debug heap corruption errors?

...) multi-threaded C++ application under Visual Studio 2008. On seemingly random occasions, I get a "Windows has triggered a break point..." error with a note that this might be due to a corruption in the heap. These errors won't always crash the application right away, although it is likely to cras...
https://stackoverflow.com/ques... 

Basic example of using .ajax() with JSONP?

...ray from script tag. So JSONP creators decided that this will work better (and it is): script = document.createElement("script"); script.type = "text/javascript"; script.src = "http://www.someWebApiServer.com/some-data?callback=my_callback"; Notice my_callback function over there? So - when JSONP...
https://stackoverflow.com/ques... 

Passing just a type as a parameter in C#

Hypothetically it'd be handy for me to do this: 7 Answers 7 ...
https://stackoverflow.com/ques... 

ERROR 2006 (HY000): MySQL server has gone away

... for me; nothing could be done via client-side only configuration/options, and I wasn't willing to go down a programmatic solution via PHP or other. – Richard Sitze Dec 16 '12 at 21:15 ...
https://stackoverflow.com/ques... 

Tuples( or arrays ) as Dictionary keys in C#

...alues to one string. I tried using arrays as keys, but that did not work, and I don't know what else to do. At this point I am considering making a Dictionary of Dictionaries of Dictionaries, but that would probably not be very pretty to look at, though it is how I would do it in javascript. ...
https://stackoverflow.com/ques... 

Null check in an enhanced for loop

...ecause an empty list won't fail. If you get this list from somewhere else and don't know if it is ok or not you could create a utility method and use it like this: for( Object o : safe( list ) ) { // do whatever } And of course safe would be: public static List safe( List other ) { ret...
https://stackoverflow.com/ques... 

Java generics type erasure: when and what happens?

...metadata in the class file to say whether or not a method/type is generic, and what the constraints are etc. But when generics are used, they're converted into compile-time checks and execution-time casts. So this code: List<String> list = new ArrayList<String>(); list.add("Hi"); String...