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Print time difference

Source: R/general_cat_diff.R
cat_diff.Rd

This function calculates the time difference from a given initial time to the current time and prints it with a specified prefix. Optionally, it can also print a session summary.

Usage

cat_diff(
  init_time,
  chunk_text = "Session summary",
  prefix = "Completed in ",
  cat_info = FALSE,
  level = 0L,
  cat_timestamp = FALSE,
  verbose = TRUE,
  ...
)

Arguments

init_time

POSIXct. The initial time from which the difference is calculated.

chunk_text

Character. The message printed as chunk info. Default value: Session summary. See: info_chunk for more information.

prefix

Character. prefix to prepend to the printed time difference. Defaults to "Completed in ".

cat_info

Logical. If TRUE, prints a session summary using info_chunk ("Session summary"). Defaults to FALSE.

level

integer; the level at which the message will be printed. If e.g. level = 1L, the following string will be printed at the beginning of the message: " >>> ". Default is 0.

cat_timestamp

logical; whether to include the time in the timestamp. Default is TRUE. If FALSE, only the text is printed.

verbose

logical; whether to print output to console. Default is TRUE. If FALSE, the function does nothing. This is useful to suppress the function output in certain contexts.

...

Additional arguments for cat_time.

Value

The function is used for its side effect of printing to the console and does not return any value.

Author

Ahmed El-Gabbas

Examples

# basic usage
reference_time <- (lubridate::now() - lubridate::seconds(45))

cat_diff(reference_time)
#> Completed in 00:00:45

# custom prefix text
cat_diff(reference_time, prefix = "Finished in ")
#> Finished in 00:00:45

# level = 1
cat_diff(reference_time, prefix = "Finished in ", level = 1L)
#>   >>>  Finished in 00:00:45

# print date
cat_diff(reference_time, prefix = "Finished in ", cat_timestamp = TRUE)
#> Finished in 00:00:45 - 15:32:07

# print date and time
cat_diff(reference_time, prefix = "Finished in ", cat_date = TRUE)
#> Finished in 00:00:45 - 23/07/2025

# show chunk info
cat_diff(reference_time, cat_info = TRUE, prefix = "Finished in ")
#> 
#> --------------------------------------------------
#> Session summary - 23/07/2025
#> --------------------------------------------------
#> 
#> 
#> Finished in 00:00:45

# custom chunk info text
cat_diff(
  reference_time, cat_info = TRUE, chunk_text = "Summary of task",
  prefix = "Finished in ")
#> 
#> --------------------------------------------------
#> Summary of task - 23/07/2025
#> --------------------------------------------------
#> 
#> 
#> Finished in 00:00:45

# |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||

reference_time <- (lubridate::now() -
    (lubridate::minutes(50) + lubridate::seconds(45)))
cat_diff(reference_time)
#> Completed in 00:50:45

reference_time <- (lubridate::now() - lubridate::minutes(50))
cat_diff(reference_time)
#> Completed in 00:50:00

reference_time <- (lubridate::now() - lubridate::minutes(70))
cat_diff(reference_time)
#> Completed in 01:10:00

reference_time <- (lubridate::now() - lubridate::hours(4))
cat_diff(reference_time)
#> Completed in 04:00:00

reference_time <- lubridate::now() -
  (lubridate::hours(4) + lubridate::minutes(50) + lubridate::seconds(45))
cat_diff(reference_time)
#> Completed in 04:50:45