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Arrays are composite types that contain a fixed number of values of the same
type. Arrays values can be created using square brackets `[1 2 3]` (which is
syntactic sugar for the [`(mkarray …)`][:mkarray:] builtin).
This uses [Pure Op](04-2_pure-operators.html) semantics to construct an array
from several values, all of which have to be of the same type.
(trace [1 2 3])
```output
<num[3]= [1 2 3]>
```
The type notation `num[3]` designates an array of three numbers, whereas the
value notation `[1 2 3]` is used to show the array contents.
The [array][:array/:] module provides *Op*s for working with arrays.
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