Adam Laiacano

R has an interesting list of built-in constants

Of all of the mathematical and scientific constants, they decided to go with lower/upper case letters, month names/abbreviations, and pi.

Constants {base}           R Documentation

Built-in Constants

Description

Constants built into R.

Usage

LETTERS
letters
month.abb
month.name
pi

Details

R has a small number of built-in constants.

The following constants are available:

• LETTERS: the 26 upper-case letters of the Roman alphabet;
• letters: the 26 lower-case letters of the Roman alphabet;
• month.abb: the three-letter abbreviations for the English month names;
• month.name: the English names for the months of the year;
• pi: the ratio of the circumference of a circle to its diameter.

These are implemented as variables in the base name space taking appropriate values.