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;
or:
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 <- {
test1=1234
deleteme="now"
}
delete a.test1
print(delete a.deleteme); //this will print the string "now"