2.6. Tables

Tables are associative containers implemented as pairs of key/value (called slot); values can be any possible type and keys any type except ‘null’. Tables are squirrel’s skeleton, delegation and many other features are all implemented through this type; even the environment, where “global” variables are stored, is a table (known as root table).

2.6.1. Construction

Tables are created through the table constructor (see Table constructor)

2.6.2. Slot creation

Adding a new slot in a existing table is done through the “new slot” operator <-; this operator behaves like a normal assignment except that if the slot does not exists it will be created.:

local a = {}

The following line will cause an exception because the slot named ‘newslot’ does not exist in the table ‘a’:

a.newslot = 1234

this will succeed:

a.newslot <- 1234;


a[1] <- "I'm the value of the new slot";

2.6.3. Slot deletion

exp:= delete derefexp

Deletion of a slot is done through the keyword delete; the result of this expression will be the value of the deleted slot.:

a <- {

delete a.test1
print(delete a.deleteme); //this will print the string "now"