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Print the location in memory of a data frame

Source: R/deprec-location.R
location.Rd

[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.
#> <0x560f6b9f0b08>
#> Variables:
#>  * mpg:       <0x560f6767c8a0>
#>  * cyl:       <0x560f683e2780>
#>  * disp:      <0x560f6b6078c0>
#>  * hp:        <0x560f6b9930d0>
#>  * drat:      <0x560f6843bbb0>
#>  * wt:        <0x560f67754050>
#>  * qsec:      <0x560f6a3ae270>
#>  * vs:        <0x560f6a85d0a0>
#>  * am:        <0x560f6b5a14f0>
#>  * gear:      <0x560f6babdbc0>
#>  * carb:      <0x560f6b01a480>
#> Attributes:
#>  * names:     <0x560f6b9f0bb8>
#>  * row.names: <0x560f6b30a870>
#>  * class:     <0x560f6ac2d9c0>
# ->
lobstr::ref(mtcars)
#> █ [1:0x560f6b9f0b08] <df[,11]> 
#> ├─mpg = [2:0x560f6767c8a0] <dbl> 
#> ├─cyl = [3:0x560f683e2780] <dbl> 
#> ├─disp = [4:0x560f6b6078c0] <dbl> 
#> ├─hp = [5:0x560f6b9930d0] <dbl> 
#> ├─drat = [6:0x560f6843bbb0] <dbl> 
#> ├─wt = [7:0x560f67754050] <dbl> 
#> ├─qsec = [8:0x560f6a3ae270] <dbl> 
#> ├─vs = [9:0x560f6a85d0a0] <dbl> 
#> ├─am = [10:0x560f6b5a14f0] <dbl> 
#> ├─gear = [11:0x560f6babdbc0] <dbl> 
#> └─carb = [12:0x560f6b01a480] <dbl> 

mtcars2 <- mutate(mtcars, cyl2 = cyl * 2)
# ->
lobstr::ref(mtcars2)
#> █ [1:0x560f6a68f5f8] <df[,12]> 
#> ├─mpg = [2:0x560f6767c8a0] <dbl> 
#> ├─cyl = [3:0x560f683e2780] <dbl> 
#> ├─disp = [4:0x560f6b6078c0] <dbl> 
#> ├─hp = [5:0x560f6b9930d0] <dbl> 
#> ├─drat = [6:0x560f6843bbb0] <dbl> 
#> ├─wt = [7:0x560f67754050] <dbl> 
#> ├─qsec = [8:0x560f6a3ae270] <dbl> 
#> ├─vs = [9:0x560f6a85d0a0] <dbl> 
#> ├─am = [10:0x560f6b5a14f0] <dbl> 
#> ├─gear = [11:0x560f6babdbc0] <dbl> 
#> ├─carb = [12:0x560f6b01a480] <dbl> 
#> └─cyl2 = [13:0x560f75156d30] <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> 0x560f75156d30
#> 
#> Changed attributes:
#>       old            new           
#> names 0x560f6b9f0bb8 0x560f6a68e6d8
# ->
lobstr::ref(mtcars, mtcars2)
#> █ [1:0x560f6b9f0b08] <df[,11]> 
#> ├─mpg = [2:0x560f6767c8a0] <dbl> 
#> ├─cyl = [3:0x560f683e2780] <dbl> 
#> ├─disp = [4:0x560f6b6078c0] <dbl> 
#> ├─hp = [5:0x560f6b9930d0] <dbl> 
#> ├─drat = [6:0x560f6843bbb0] <dbl> 
#> ├─wt = [7:0x560f67754050] <dbl> 
#> ├─qsec = [8:0x560f6a3ae270] <dbl> 
#> ├─vs = [9:0x560f6a85d0a0] <dbl> 
#> ├─am = [10:0x560f6b5a14f0] <dbl> 
#> ├─gear = [11:0x560f6babdbc0] <dbl> 
#> └─carb = [12:0x560f6b01a480] <dbl> 
#>  
#> █ [13:0x560f6a68f5f8] <df[,12]> 
#> ├─mpg = [2:0x560f6767c8a0] 
#> ├─cyl = [3:0x560f683e2780] 
#> ├─disp = [4:0x560f6b6078c0] 
#> ├─hp = [5:0x560f6b9930d0] 
#> ├─drat = [6:0x560f6843bbb0] 
#> ├─wt = [7:0x560f67754050] 
#> ├─qsec = [8:0x560f6a3ae270] 
#> ├─vs = [9:0x560f6a85d0a0] 
#> ├─am = [10:0x560f6b5a14f0] 
#> ├─gear = [11:0x560f6babdbc0] 
#> ├─carb = [12:0x560f6b01a480] 
#> └─cyl2 = [14:0x560f75156d30] <dbl>