code guest register log in programs messages repl prompts data documentation source about privacy terms /up french production

add

Date
examples
date add year 1
input
Date.add(year: 1)
result
2026-06-21
date add month 1
input
Date.add(month: 1)
result
2025-07-21
date add day 1
input
Date.add(day: 1)
result
2025-06-22