Arrays (Maxima 5.47.0 Manual)

Maxima supports 3 array-like constructs:

If one tries to write to an indexed variable without creating a list first an undeclared array (also named hashed array) is created that grows dynamically and allows numbers, symbols and strings as indices:
```
(%i1) a["feww"]:1;
(%o1)                           1
```
```
(%i2) a[qqwdqwd]:3;
(%o2)                           3
```
```
(%i3) a[5]:99;
(%o3)                          99
```
```
(%i4) a[qqwdqwd];
(%o4)                           3
```
```
(%i5) a[5];
(%o5)                          99
```
```
(%i6) a["feww"];
(%o6)                           1
```
Since lisp handles hashed arrays and memoizing functions similar to arrays many of the functions that can be applied to arrays can be applied to them, as well.
Lists (see makelist allow for fast addition and removal of elements, can be created without knowing their final size.
Declared arrays that allow fast access to random elements at the cost that their size needs to be known at construction time. (See Performance considerations for Lists.)