大约有 18,616 项符合查询结果（耗时：0.0382秒） [XML]
How can I tell if I'm running in 64-bit JVM or 32-bit JVM (from within a program)?
... is 32 bit or 64-bit? Specifically, what functions or properties I can used to detect this within the program?
12 Answers
...
How does this program work?
It displays a 0 !! How is that possible? What is the reasoning?
13 Answers
13
...
nginx missing sites-available directory
I installed Nginx on Centos 6 and I am trying to set up virtual hosts. The problem I am having is that I can't seem to find the /etc/nginx/sites-available directory.
...
Add leading zeroes to number in Java? [duplicate]
...e a better way of getting this result? This function fails if num has more digits than digits, and I feel like it should be in the library somewhere (like Integer.toString(x,"%3d") or something)
...
How might I convert a double to the nearest integer value?
How do you convert a double into the nearest int?
8 Answers
8
...
Named Branches vs Multiple Repositories
We're currently using subversion on a relatively large codebase. Each release gets its own branch, and fixes are performed against the trunk and migrated into release branches using svnmerge.py
...
Linear Regression and group by in R
I want to do a linear regression in R using the lm() function. My data is an annual time series with one field for year (22 years) and another for state (50 states). I want to fit a regression for each state so that at the end I have a vector of lm responses. I can imagine doing for loop for each ...
How can I create a correlation matrix in R?
I have 92 set of data of same type.
5 Answers
5
...
How to normalize an array in NumPy?
I would like to have the norm of one NumPy array. More specifically, I am looking for an equivalent version of this function
...
Delete all lines beginning with a # from a file
All of the lines with comments in a file begin with # . How can I delete all of the lines (and only those lines) which begin with # ? Other lines containing # , but not at the beginning of the line should be ignored.
...