# 创建add函数 use_r("add")# 添加roxygen2格式的注释 #&#39; Add together two numbers #&#39; #&#39; &#64;param x A number. #&#39; &#64;param y A number. #&#39; &#64;return The sum of \code{x} and \code{y}. #&#39; &#64;examples #&#39; add(1, 1) #&#39; add(10, 1) add<- function(x, y){x &#43; y }# 创建 .Rd 文件&#xff1a;该文件自动在man目录下添加 devtools::document()
#&#39; Sum of vector elements #&#39; #&#39; \code{sum} returns the sum of all the values present in its arguments. #&#39; #&#39; This is a generic function: methods can be defined for it directly #&#39; or via the \code{\link{Summary}} group generic. For this to work properly, #&#39; the arguments \code{...} should be unnamed, and dispatch is on the #&#39; first argument. #&#39; #&#39; &#64;param ... Numeric, complex, or logical vectors. #&#39; &#64;param na.rm A logical scalar. Should missing values (including NaN) #&#39; be removed? #&#39; &#64;return If all inputs are integer and logical, then the output #&#39; will be an integer. If integer overflow #&#39; \url{https://en.wikipedia.org/wiki/Integer_overflow} occurs, the output #&#39; will be NA with a warning. Otherwise it will be a length-one numeric or #&#39; complex vector. #&#39; #&#39; Zero-length vectors have sum 0 by definition. See #&#39; \url{https://en.wikipedia.org/wiki/Empty_sum} for more details. #&#39; &#64;examples #&#39; sum(1:10) #&#39; sum(1:5, 6:10) #&#39; sum(F, F, F, T, T) #&#39; #&#39; sum(.Machine$integer.max, 1L) #&#39; sum(.Machine$integer.max, 1) #&#39; #&#39; \dontrun{ #&#39; sum("a") #&#39; } sum<- function(..., na.rm &#61; TRUE){}
> x <- sample(1000) > usethis::use_data(x, mtcars) ✓ Adding &#39;R&#39; to Depends field in DESCRIPTION ✓ Creating &#39;data/&#39; ✓ Saving &#39;x&#39;, &#39;mtcars&#39; to &#39;data/x.rda&#39;, &#39;data/mtcars.rda&#39; ● Document your data (see &#39;https://r-pkgs.org/data.html&#39;)
#&#39; Prices of 50,000 round cut diamonds. #&#39; #&#39; A dataset containing the prices and other attributes of almost 54,000 #&#39; diamonds. #&#39; #&#39; &#64;format A data frame with 53940 rows and 10 variables: #&#39; \describe{ #&#39; \item{price}{price, in US dollars} #&#39; \item{carat}{weight of the diamond, in carats} #&#39; ... #&#39; } #&#39; &#64;source \url{http://www.diamondse.info/} "diamonds"