Amalgams<T> class

A pseudo-list of amalgams (permutations with repetition).

A pseudo-list "containing" all the r-amalgams (order important, repetition allowed) of objects taken from the list items.

Example

final a = Amalgams(3, characters("abcd"));
print("There are ${a.length} 3-amalgams of the objects");
print("in ${a.items}.");
print("The first amalgam is ${a[0]}.");
Inheritance

Constructors

Amalgams(int r, List<T> items)

Properties

hashCode → int
The hash code for this object.
no setterinherited
items → List<T>
The list from which the objects are selected
no setteroverride
iterable → Iterable
An Iterable object that "contains" all the arrangements.
no setterinherited
length → BigInt
The number of arrangements "contained" in this pseudo-list.
no setteroverride
r → int
The number of items taken from items.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

call([Object? fromTo, Object? to]) → Iterable<List<T>>
inherited
contains(List<T> x) → bool
Returns whether x is in the pseudo-list.
override
indexOf(List<T> amalgam, [BigInt? start]) → BigInt
Returns the index of amalgam in the list of arranged amalgams.
override
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
range(Object fromTo, [Object? to]) → Iterable<List<T>>
Returns a range of arrangements.
inherited
sample(int n, {int? seed, bool withReplacement = false}) → Iterable
Generates a random sample of arrangements from this pseudo-list.
inherited
toString() → String
A string representation of this object.
override

Operators

operator ==(Object other) → bool
The equality operator.
inherited
operator [](Object k) → List<T>
The kth arrangement.
override