Conventions used

There are a number of text conventions used throughout this book.

Code in text: Indicates code words in the text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "Enter this command: install.packages(' ggdist'). It is designed to create visualizations of categorical data, in particular, mosaic plots."

A block of code is set as follows:

tbl <- src_tbl %>% 
  mutate( 
    across(categorical_vars, as.factor),
    across(integer_vars, as.integer)
  ) %>% 
  select( -all_of(vars_to_drop) )

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

aws athena get-query-execution --query-execution-id <QueryExecutionId>

Any command-line input or output is written as follows:

$ mkdir css
$ cd css

Tips or Important Notes

Appear like this.