Tinderbox v9 Icon


Operator Type: 

Operator Scope of Action: 

Operator Purpose: 

Operator First Added: 

Operator Last Altered: 

 Function  [other Function type actions]

 List  [operators of similar scope]

 Dictionary, Set & List operations  [other Dictionary, Set & List operations operators]


 As at baseline


sourceNum is the zero-based item number in the referenced List or Set.

Elements in lists, sets, may be extracted (referenced) with the bracket operator:


This has the same effect as List/Set.at( ), but may be more convenient. Both



Returns the second list item (as list item addresses are zero-based).

This syntax can also assign values to specific elements of lists. For example,

$MyList=[apple; pear; plum; cherry]; 


Will replace "pear" with "persimmon".

Nested lists

MyList = [cow;bee;[fish;whale];ant] 

$MyList[2][1] gives "whale"