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Mutable_Array

container.Mutable_Array

§(T 
type
, E 
type
)
 ref
:
Buffer container.Mutable_Array.T, container.Mutable_Array.E
 is
 
[Contains abstract features]

an interface defining a mutable array

Functions

§(t container.Mutable_Array.T)
:
Any
 => 
unit 
[Abstract feature]
add an element at the end of the array
create immutable array from this buffer
create a list from this buffer
§
:
Any
 => 
String 
[Inherited from  Buffer]
the current state of the buffer
as a string.

redefines:

§
:
Any
 => 
Type 
[Inherited from  Any]
Get the dynamic type of this instance. For value instances `x`, this is
equal to `type_of x`, but for `x` with a `ref` type `x.dynamic_type` gives
the actual runtime type, while `type_of x` results in the static
compile-time type.

There is no dynamic type of a type instance since this would result in an
endless hierarchy of types. So for Type values, dynamic_type is redefined
to just return Type.type.
§(i i64)
:
Any
 => 
container.Buffer.T 
[Inherited from  Buffer]
 
[Abstract feature]
get element at given index i
§(i i64, o container.Buffer.T)
:
Any
 => 
unit 
[Inherited from  Buffer]
 
[Abstract feature]
set element at given index i to given value o
§
:
Any
 => 
interval i64 
[Inherited from  Buffer]
a sequence of all valid indices to access this array. Useful e.g., for
`for`-loops:

for i in arr.indices do
§
:
Any
 => 
i64 
[Inherited from  Buffer]
 
[Abstract feature]
length of this buffer.
§
:
Any
 => 
String 
[Inherited from  Any]
convenience prefix operator to create a string from a value.

This permits usage of `$` as a prefix operator in a similar way both
inside and outside of constant strings: $x and "$x" will produce the
same string.

Type Features

§
:
Any
 is
 
[Inherited from  Type]
string representation of this type to be used for debugging.

result has the form "Type of '<name>'", but this might change in the future

redefines:

§
:
Any
 is
 
[Inherited from  Type]
There is no dynamic type of a type instance since this would result in an
endless hierarchy of types, so dynamic_type is redefined to just return
Type.type here.

redefines:

§(T 
type
)
:
Any
 is
 
[Inherited from  Type]
Is this type assignable to a type parameter with constraint `T`?

The result of this is a compile-time constant that can be used to specialize
code for a particular type.

is_of_integer_type(n T : numeric) => T : integer
say (is_of_integer_type 1234) # true
say (is_of_integer_type 3.14) # false

it is most useful in conjunction preconditions or `if` statements as in

pair(a,b T) is

=>

or

val(n T) is

§
:
Any
 is
 
[Inherited from  Type]
name of this type, including type parameters, e.g. 'option (list i32)'.
§
:
Any
 is
 
[Inherited from  Any]
Get a type as a value.

This is a feature with the effect equivalent to Fuzion's `expr.type` call tail.
It is recommended to use `expr.type` and not `expr.type_value`.

`type_value` is here to show how this can be implemented and to illustrate the
difference to `dynamic_type`.
last changed: 2024-09-18