大约有 8,000 项符合查询结果（耗时：0.0224秒） [XML]
What does the (unary) * operator do in this Ruby code?
...
@rampion: Wonderful comment, you just mixed LHS and RHS. It's the other way round.
– ThomasH
Jul 17 '09 at 7:34
add a comment
...
What is the difference between max-device-width and max-width for mobile web?
...dth for development, although max-device-width is more accurate for production.
– John Magnolia
Mar 24 '13 at 20:15
31
...
C#: Abstract classes need to implement interfaces?
...
AspectJ's mixins is another example. It allows you to mix partial implementations from many abstract classes into a single interface. Each abstract class only needs to implement the method it does want to implement. No dumb abstract me...
How to create a zip file in Java
...try e = new ZipEntry("folderName/mytext.txt");
You can find more information about compression with Java here.
share
|
improve this answer
|
follow
|
...
Why are there two ways to unstage a file in Git?
... kept a local copy.
git reset HEAD file ( which by default is using the --mixed flag) is different in that in the case where the file is already in the repo, it replaces the index version of the file with the one from repo (HEAD), effectively unstaging the modifications to it.
In the case of unver...
Convert a row of a data frame to vector
... comments below, if you have a not-completely-numeric (alphabetic, factor, mixed ...) data frame, you need as.character(df[1,]) instead.
share
|
improve this answer
|
follow
...
Access data in package subdirectory
...Right now I have the paths to the files hardcoded into my classes and functions. I would like to write more robust code that can access the subdirectory regardless of where it is installed on the user's system.
...
sql primary key and index
...r doesn't indicate that the PK index doesn't also already exist.
The additional index does no good, but the only harm (very small) is the additional file size and row-creation overhead.
share
|
imp...
rvm installation not working: “RVM is not a function”
...n what a login shell is can be found here.
Thus, you need to check the option "Run as login shell" in the Gnome terminal's settings. It is required to open new terminal after this setting the flag.
Sometimes it is required to set the command to /bin/bash --login.
For remote connections it is im...
Difference between staticmethod and classmethod
... and it is better to use a static method than relying on the poor style of mixing classes and function defs together in code just to show they are "related"
– MestreLion
May 3 '12 at 9:55
...