大约有 40,000 项符合查询结果（耗时：0.0630秒） [XML]
setuptools vs. distutils: why is distutils still a thing?
...n modules (their location, means of import, C extensions' binary interface etc.).
it's updated and released independently from Python releases
Effectively, the core team has narrowed down the scope of distutils, reserving the "core standards" and "minimal necessary compilation" parts for themselve...
Emulate ggplot2 default color palette
...ically, @DidzisElferts shows how you can get all the colours, coordinates, etc that ggplot uses to build a plot you created. Very nice!
p <- ggplot(mpg,aes(x=class,fill=class)) + geom_bar()
ggplot_build(p)$data
[[1]]
fill y count x ndensity ncount density PANEL group ymin ymax xmin xmax
1...
Is pass-by-value a reasonable default in C++11?
...ou're allowed to pass null pointers, if the function will take ownsership, etc. IMHO, a pointer parameter conveys much less informations than a non-const reference. I agree however that it would be nice to have a visual clue at the call site that the argument may be modified (like the ref keyword in...
Python Infinity - Any caveats?
...
A simple float addition, multiplication, etc will happily produce inf though: f=1.3407807929942597e+154; f*f => inf. It seems rather an exception of ** to raise an OverflowError.
– eregon
Jan 6 '15 at 21:32
...
How do I convert Long to byte[] and back in java
...eam();
DataOutputStream dos=new DataOutputStream(os);
dos.writeLong(l);
//etc ..
instead.
Java system properties and environment variables
...in Linux export HOME=/Users/myusername or on Windows SET WINDIR=C:\Windows etc,
and, unlike properties, may not be set at runtime.
To get a specific environment variable you can use System.getenv(String name).
share
...
Generate Java classes from .XSD files…?
....setPrice(200);
.....
JAXBContext context = JAXBContext.newInstance(item.getClass());
Marshaller marshaller = context.createMarshaller();
//I want to save the output file to item.xml
marshaller.marshal(item, new FileWriter("item.xml"));
For complete code Listing please see Code Listing 2 main.java...
Cannot create or edit Android Virtual Devices (AVD) from Eclipse, ADT 22.6
... packages from Android (DDMS, Hierarchy Viewer, NDT, Traceview, OpenGL ES..etc..) to avoid any possible compatibility issues and install a fresh new ADT from above link through archive installation method.
Hope this will solve this problem temporarily. And wait for new release of ADT here.
Update...
How does the socket API accept() function work?
...sed on their values ("protocol identifier", "routing", "binding", "socket" etc.). All your network card's hardware is designed to receive is a stream of bits. What happens to them in relation to programs on your computer is decided by the driver and OS. We could get rid of all of that terminology to...
How do I implement basic “Long Polling”?
...ller: Processes actions required to create a valid response (db operations etc.)
Processor: Manages asynch communication with the web page (itself)
IAsynchProcessor: The service processes instances that implement this interface
Sevice: Processes request objects that implement IAsynchProcessor
Reques...