Compounds<T> class

A pseudo-list of compounds.

A pseudo-list "containing" all the compounds (permutations of unspecified length) of objects taken from the list elements.

Example

final com = Compounds(letters("abcd"));
print("There are ${com.length} subsets of the objects");
print("in ${com.items}.");
print("The first subset is ${com[0]}.");

Inheritance

• Object
• Combinatorics<T>
• Compounds

Constructors

Compounds(List<T> items)

Properties

hashCode → int

The hash code for this object.

no setter, inherited

items → List<T>

The list from which the objects are selected

no setter, override

iterable → Iterable

An Iterable object that "contains" all the arrangements.

no setter, inherited

length → BigInt

The number of arrangements "contained" in this pseudo-list.

no setter, override

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

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> compound, [BigInt? start]) → BigInt

Returns the index of subset in the list of arranged subsets.

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