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mutable_tree_map

container.mutable_tree_map

mutable_tree_map -- a mutable map using an AVL tree

Functions

returns a string representation of the map
§
:
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.
freeze the map, such that it is no longer mutable afterwards
§(k container.mutable_tree_map.KEY)
:
Any
 => 
option container.mutable_tree_map.VAL
get the value stored in this map at key k, nil if k is not
contained in this map
§(k container.Map.K)
:
Any
 => 
bool 
[Inherited from  Map]
check if key k is present in the set of keys
§(k container.mutable_tree_map.KEY)
:
Any
 => 
option container.mutable_tree_map.VAL 
[Redefinition of container.Map.index [ ]]
get the value k is mapped to, or nil if none.
get a sequence of all key/value pairs in this map
§
:
Any
 => 
Sequence container.Map.K 
[Inherited from  Map]
get a sequence of all keys in this map
§
:
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.
§(k container.mutable_tree_map.KEY, v container.mutable_tree_map.VAL)
:
Any
 => 
option container.mutable_tree_map.VAL
add the mapping k -> v as a new entry to this map

returns the value that k previously mapped to, or nil if
k was not yet contained in this map
§(key container.mutable_tree_map.KEY)
:
Any
 => 
option container.mutable_tree_map.VAL
remove the mapping from k to some value from this map

returns the value that k previously mapped to, or nil if
no mapping was actually removed
§
:
Any
 => 
i32 
[Redefinition of container.Map.size]
returns the size of the map, i.e. the number of elements it contains

redefines:

get a sequence of all values in this map

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:

returns an empty tree of elements of type A.
initialize a map from an array of key value tuples
initialize a map from an array of key value tuples

if the freeze argument is true, then the map is frozen
after being populated with the entries from the array.
§(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)'.
§(k container.mutable_tree_map.type.KEY, v container.mutable_tree_map.type.VAL)
:
Any
 is
returns a tree of elements of type A that contains just the element a.
§
:
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