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[Deprecated]

This is useful for understand how and when dplyr makes copies of data frames

Usage

location(df)

changes(x, y)

Arguments

df

a data frame

x, y

two data frames to compare

Examples

location(mtcars)
#> Warning: `location()` was deprecated in dplyr 1.0.0.
#> Please use `lobst::ref()` instead.
#> This warning is displayed once every 8 hours.
#> Call `lifecycle::last_lifecycle_warnings()` to see where this warning was generated.
#> <0x563bf2312198>
#> Variables:
#>  * mpg:       <0x563bf606f3c0>
#>  * cyl:       <0x563bf606f530>
#>  * disp:      <0x563bf3d51a90>
#>  * hp:        <0x563bf3d51bd0>
#>  * drat:      <0x563bf3d51d10>
#>  * wt:        <0x563bf3e239e0>
#>  * qsec:      <0x563bf3e23b20>
#>  * vs:        <0x563bf3e23c60>
#>  * am:        <0x563bf6497880>
#>  * gear:      <0x563bf64979c0>
#>  * carb:      <0x563bf6497b00>
#> Attributes:
#>  * names:     <0x563bf23123a8>
#>  * row.names: <0x563bf5a68fa0>
#>  * class:     <0x563bf50a4b10>
# ->
lobstr::ref(mtcars)
#>  [1:0x563bf2312198] <df[,11]> 
#> ├─mpg = [2:0x563bf606f3c0] <dbl> 
#> ├─cyl = [3:0x563bf606f530] <dbl> 
#> ├─disp = [4:0x563bf3d51a90] <dbl> 
#> ├─hp = [5:0x563bf3d51bd0] <dbl> 
#> ├─drat = [6:0x563bf3d51d10] <dbl> 
#> ├─wt = [7:0x563bf3e239e0] <dbl> 
#> ├─qsec = [8:0x563bf3e23b20] <dbl> 
#> ├─vs = [9:0x563bf3e23c60] <dbl> 
#> ├─am = [10:0x563bf6497880] <dbl> 
#> ├─gear = [11:0x563bf64979c0] <dbl> 
#> └─carb = [12:0x563bf6497b00] <dbl> 

mtcars2 <- mutate(mtcars, cyl2 = cyl * 2)
# ->
lobstr::ref(mtcars2)
#>  [1:0x563bf65e7268] <df[,12]> 
#> ├─mpg = [2:0x563bf606f3c0] <dbl> 
#> ├─cyl = [3:0x563bf606f530] <dbl> 
#> ├─disp = [4:0x563bf3d51a90] <dbl> 
#> ├─hp = [5:0x563bf3d51bd0] <dbl> 
#> ├─drat = [6:0x563bf3d51d10] <dbl> 
#> ├─wt = [7:0x563bf3e239e0] <dbl> 
#> ├─qsec = [8:0x563bf3e23b20] <dbl> 
#> ├─vs = [9:0x563bf3e23c60] <dbl> 
#> ├─am = [10:0x563bf6497880] <dbl> 
#> ├─gear = [11:0x563bf64979c0] <dbl> 
#> ├─carb = [12:0x563bf6497b00] <dbl> 
#> └─cyl2 = [13:0x563bf38b1ad0] <dbl> 

changes(mtcars, mtcars2)
#> Warning: `changes()` was deprecated in dplyr 1.0.0.
#> Please use `lobstr::ref()` instead.
#> This warning is displayed once every 8 hours.
#> Call `lifecycle::last_lifecycle_warnings()` to see where this warning was generated.
#> Changed variables:
#>       old     new           
#> cyl2  <added> 0x563bf38b1ad0
#> 
#> Changed attributes:
#>       old            new           
#> names 0x563bf23123a8 0x563bf4221458
# ->
lobstr::ref(mtcars, mtcars2)
#>  [1:0x563bf2312198] <df[,11]> 
#> ├─mpg = [2:0x563bf606f3c0] <dbl> 
#> ├─cyl = [3:0x563bf606f530] <dbl> 
#> ├─disp = [4:0x563bf3d51a90] <dbl> 
#> ├─hp = [5:0x563bf3d51bd0] <dbl> 
#> ├─drat = [6:0x563bf3d51d10] <dbl> 
#> ├─wt = [7:0x563bf3e239e0] <dbl> 
#> ├─qsec = [8:0x563bf3e23b20] <dbl> 
#> ├─vs = [9:0x563bf3e23c60] <dbl> 
#> ├─am = [10:0x563bf6497880] <dbl> 
#> ├─gear = [11:0x563bf64979c0] <dbl> 
#> └─carb = [12:0x563bf6497b00] <dbl> 
#>  
#>  [13:0x563bf65e7268] <df[,12]> 
#> ├─mpg = [2:0x563bf606f3c0] 
#> ├─cyl = [3:0x563bf606f530] 
#> ├─disp = [4:0x563bf3d51a90] 
#> ├─hp = [5:0x563bf3d51bd0] 
#> ├─drat = [6:0x563bf3d51d10] 
#> ├─wt = [7:0x563bf3e239e0] 
#> ├─qsec = [8:0x563bf3e23b20] 
#> ├─vs = [9:0x563bf3e23c60] 
#> ├─am = [10:0x563bf6497880] 
#> ├─gear = [11:0x563bf64979c0] 
#> ├─carb = [12:0x563bf6497b00] 
#> └─cyl2 = [14:0x563bf38b1ad0] <dbl>