Editing Oz (programming language) (section)

===Data structures===
Oz is based on a core language with very few datatypes that can be extended into more practical ones through [[syntactic sugar]].

Basic data structures:
* Numbers: floating point or integer (real integer)
* Records: for grouping data : <code> circle(x:0 y:1 radius:3 color:blue style:dots)</code>. Here the terms x,y, radius etc. are called features and the data associated with the features (in this case 0,1,3 etc.) are the values.
* Tuples: Records with integer features in ascending order: <code> circle(1:0 2:1 3:3 4:blue 5:dots) </code>. 
* Lists: a simple linear structure
<syntaxhighlight lang="erlang">
'|'(2 '|'(4 '|'(6 '|'(8 nil)))) % as a record.
2|(4|(6|(8|nil))) % with some syntactic sugar
2|4|6|8|nil % more syntactic sugar
[2 4 6 8] % even more syntactic sugar
</syntaxhighlight>
Those data structures are values (constant), [[first-class object|first class]] and [[dynamic typing|dynamically type checked]]. Variable names in Oz start with an uppercase letter to distinguish them from [[Literal (computer programming)|literals]]<ref>{{Cite web|url=https://mozart.github.io/mozart-v1/doc-1.4.0/tutorial/node3.html#label18|title=3 Basics}}</ref> which always begin with a lowercase letter.