Aliases — extract • magrittr

magrittr provides a series of aliases which can be more pleasant to use when composing chains using the %>% operator.

Details

Currently implemented aliases are

`extract`	`[`
`extract2`	`[[`
`inset`	`[<-`
`inset2`	`[[<-`
`use_series`	`$`
`add`	`+`
`subtract`	`-`
`multiply_by`	`*`
`raise_to_power`	`^`
`multiply_by_matrix`	`%*%`
`divide_by`	`/`
`divide_by_int`	`%/%`
`mod`	`%%`
`is_in`	`%in%`
`and`	`&`
`or`	`\|`
`equals`	`==`
`is_greater_than`	`>`
`is_weakly_greater_than`	`>=`
`is_less_than`	`<`
`is_weakly_less_than`	`<=`
`not` (`n'est pas`)	`!`
`set_colnames`	`colnames<-`
`set_rownames`	`rownames<-`
`set_names`	`names<-`
`set_class`	`class<-`
`set_attributes`	`attributes<-`
`set_attr`	`attr<-`

Examples

 iris %>%
   extract(, 1:4) %>%
   head
#>   Sepal.Length Sepal.Width Petal.Length Petal.Width
#> 1          5.1         3.5          1.4         0.2
#> 2          4.9         3.0          1.4         0.2
#> 3          4.7         3.2          1.3         0.2
#> 4          4.6         3.1          1.5         0.2
#> 5          5.0         3.6          1.4         0.2
#> 6          5.4         3.9          1.7         0.4

good.times <-
  Sys.Date() %>%
  as.POSIXct %>%
  seq(by = "15 mins", length.out = 100) %>%
  data.frame(timestamp = .)

good.times$quarter <-
  good.times %>%
  use_series(timestamp) %>%
  format("%M") %>%
  as.numeric %>%
  divide_by_int(15) %>%
  add(1)