大约有 30,000 项符合查询结果（耗时：0.0453秒） [XML]
Unique combination of all elements from two (or more) vectors
... what you are after
> expand.grid(a,b)
Var1 Var2
1 ABC 2012-05-01
2 DEF 2012-05-01
3 GHI 2012-05-01
4 ABC 2012-05-02
5 DEF 2012-05-02
6 GHI 2012-05-02
7 ABC 2012-05-03
8 DEF 2012-05-03
9 GHI 2012-05-03
10 ABC 2012-05-04
11 DEF 2012-05-04
12 GHI 2012-05-04
13 ABC 20...
How do I iterate through each element in an n-dimensional matrix in MATLAB?
I have a problem. I need to iterate through every element in an n-dimensional matrix in MATLAB. The problem is, I don't know how to do this for an arbitrary number of dimensions. I know I can say
...
Why no generics in Go?
Disclaimer: I've only played with Go for one day now, so there's a good chance I've missed a lot.
6 Answers
...
Java using enum with switch statement
I've looked at various Q&As on SO similar to this question but haven't found a solution.
8 Answers
...
How to “grep” for a filename instead of the contents of a file?
...on.
– whereswalden
Aug 11 '14 at 21:05
5
it is unnecessary here, but grep supports perl regex whe...
Parsing command-line arguments in C?
I'm trying to write a program that can compare two files line by line, word by word, or character by character in C. It has to be able to read in command line options -l -w -i or -- ...
...
What is the difference between LL and LR parsing?
Can anyone give me a simple example of LL parsing versus LR parsing?
5 Answers
5
...
MySQL: @variable vs. variable. What's the difference?
In another question I posted someone told me that there is a difference between:
4 Answers
...
How do you test a public/private DSA keypair?
Is there an easy way to verify that a given private key matches a given public key? I have a few *.pub and a few *.key files, and I need to check which go with which.
...