Chapter I ·
Language basics
/
Lesson 5 of 27
Tables are everything
You'll learn: Build arrays, records, and nested tables, and know what
#t actually counts.
Tables are *the* data structure: arrays, hash maps, records,
modules — all tables. Indexed from 1 by convention. #t is
defined for *sequences* ({v1, v2, ..., vn} with no nils) and
unspecified for sparse tables. Mix array and hash keys in one
literal.
Output
idle
Hit Run to execute.
Try it:
Add
user.prefs.shortcuts = { save = "⌘S" } and print user.prefs.shortcuts.save. Then add user[5] = "trailing" — what does #user return now?