Compare two snapshots — snap

Lists the inputs, values, and metadata entries that differ between two snapshots. Values are flattened one level, so a tracked reactiveValues stored as prefs with a changed digits field shows up as prefs$digits.

Usage

snap_diff(a, b)

Arguments

a, b: Snapshot objects, lists of snapshot fields, file paths, or JSON text.

Value

A data frame of class shinysnap_diff with one row per difference and the columns id, section ("inputs", "values", or "meta"), status ("added", "removed", or "changed", seen from a to b), and the list columns old and new holding the values (NULL for the side where the entry is absent).

Examples

a <- snap_unserialize('{"format": 1, "inputs": {"n": 1, "x": "old"},
  "values": {"prefs": {"digits": 3}}}')
b <- snap_unserialize('{"format": 1, "inputs": {"n": 1, "y": true},
  "values": {"prefs": {"digits": 4}}}')
snap_diff(a, b)
#> <shinysnap_diff> 3 difference(s)
#>            id section  status   old  new
#>             x  inputs removed "old"     
#>             y  inputs   added       TRUE
#>  prefs$digits  values changed    3L   4L