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2021年5月28日 · I have recently come across the code |> in R. It is a vertical line character (pipe) followed by a greater than symbol. Here is an example: mtcars |> head() What is the |> code …
2014年11月25日 · I have seen the use of %>% (percent greater than percent) function in some packages like dplyr and rvest. What does it mean? Is it a way to write closure blocks in R?
What is difference in a string between \r\n, \r and \n? How is a string affected by each? I have to replace the occurrences of \r\n and \r with \n, but I cannot get how are they different in a stri...
2 天之前 · R is a free, open-source programming language and software environment for statistical computing, bioinformatics, information graphics, and general computing.
It's a matrix multiplication operator! From the documentation: Description: Multiplies two matrices, if they are conformable. If one argument is a vector, it will be promoted to either a row or column matrix to …
The infix operator %>% is not part of base R, but is in fact defined by the package magrittr (CRAN) and is heavily used by dplyr (CRAN). It works like a pipe, hence the reference to Magritte's famous …
I think && and || are badly implemented in R. In other languages they the conditional AND and OR operators, they perform a logical AND or OR boolean operations, but only evaluate its second …
2009年11月19日 · What’s the difference between \n (newline) and \r (carriage return)? In particular, are there any practical differences between \n and \r? Are there places where one should be used …
R's syntax contains many ambiguous cases that have to be resolved one way or another. The parser chooses to resolve the bits of the expression in different orders depending on whether = or <- was …
What's the differences in usage? Yes, I've checked the docs, yet I'm a little bit confused. The docs says:
