大约有 44,000 项符合查询结果（耗时：0.0505秒） [XML]
Using cURL with a username and password?
I want to access a URL which requires a username/password. I'd like to try accessing it with curl. Right now I'm doing something like:
...
Apply a function to every row of a matrix or a data frame
Suppose I have a n by 2 matrix and a function that takes a 2-vector as one of its arguments. I would like to apply the function to each row of the matrix and get a n-vector. How to do this in R?
...
In what cases could `git pull` be harmful?
... pull creates merge commits which add noise and complexity to the code history. In addition, pull makes it easy to not think about how your changes might be affected by incoming changes.
The git pull command is safe so long as it only performs fast-forward merges. If git pull is configured to onl...
Should Javadoc comments be added to the implementation?
Is it correct practice to add Javadoc comments in the interface and add non-Javadoc comments in the implementation?
7 Answe...
get name of a variable or parameter [duplicate]
I would like to get the name of a variable or parameter:
3 Answers
3
...
How do I compare two strings in Perl?
...
See perldoc perlop. Use lt, gt, eq, ne, and cmp as appropriate for string comparisons:
Binary eq returns true if the left argument is stringwise equal to the right argument.
Binary ne returns true if the left argument is stringwise not equal to the right argument.
Binary cmp returns -1, ...
GCC -fPIC option
I have read about GCC's Options for Code Generation Conventions , but could not understand what "Generate position-independent code (PIC)" does. Please give an example to explain me what does it mean.
...
Difference between Git and GitHub
...
Git is a revision control system, a tool to manage your source code history.
GitHub is a hosting service for Git repositories.
So they are not the same thing: Git is the tool, GitHub is the service for projects that use Git.
To get your code to GitHub, have a look here.
...
“The underlying connection was closed: An unexpected error occurred on a send.” With SSL Certificate
...get this exception "THE UNDERLYING CONNECTION WAS CLOSED: AN UNEXPECTED ERROR OCCURRED ON A SEND" in my logs and it is breaking our OEM integration with our email marketing system at random times varying from [1hour - 4 hours]
...
Why is the apt-get function not working in the terminal on Mac OS X v10.9 (Mavericks)?
...on
Use Homebrew to install packages that you would otherwise use apt-get for.
The page I linked to has an up-to-date way of installing homebrew, but at present, you can install Homebrew as follows:
Type the following in your Mac OS X terminal:
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubuserc...