HashSet[A: Any #share, H: HashFunction[A] val]

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A set, built on top of persistent Map. This is implemented as map of an alias of a type to itself.

class val HashSet[A: Any #share, H: HashFunction[A] val] is
  Comparable[HashSet[A, H] box] ref

Implements

• Comparable[HashSet[A, H] box] ref

Constructors

create

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new val create()
: HashSet[A, H] val^

Returns

• HashSet[A, H] val^

Public Functions

size

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Return the number of elements in the set.

fun box size()
: USize val

Returns

• USize val

apply

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Return the value if it is in the set, otherwise raise an error.

fun box apply(
  value: val->A)
: val->A ?

Parameters

• value: val->A

Returns

• val->A ?

contains

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Check whether the set contains the value.

fun box contains(
  value: val->A)
: Bool val

Parameters

• value: val->A

Returns

• Bool val

add

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Return a set with the value added.

fun val add(
  value: val->A)
: HashSet[A, H] val

Parameters

• value: val->A

Returns

• HashSet[A, H] val

sub

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Return a set with the value removed.

fun val sub(
  value: val->A)
: HashSet[A, H] val

Parameters

• value: val->A

Returns

• HashSet[A, H] val

op_or

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Return a set with the elements of both this and that.

fun val op_or(
  that: (HashSet[A, H] val | Iterator[A] ref))
: HashSet[A, H] val

Parameters

• that: (HashSet[A, H] val | Iterator[A] ref)

Returns

• HashSet[A, H] val

op_and

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Return a set with the elements that are in both this and that.

fun val op_and(
  that: (HashSet[A, H] val | Iterator[A] ref))
: HashSet[A, H] val

Parameters

• that: (HashSet[A, H] val | Iterator[A] ref)

Returns

• HashSet[A, H] val

op_xor

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Return a set with elements that are in either this or that, but not both.

fun val op_xor(
  that: (HashSet[A, H] val | Iterator[A] ref))
: HashSet[A, H] val

Parameters

• that: (HashSet[A, H] val | Iterator[A] ref)

Returns

• HashSet[A, H] val

without

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Return a set with the elements of this that are not in that.

fun val without(
  that: (HashSet[A, H] val | Iterator[A] ref))
: HashSet[A, H] val

Parameters

• that: (HashSet[A, H] val | Iterator[A] ref)

Returns

• HashSet[A, H] val

eq

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Return true if this and that contain the same elements.

fun box eq(
  that: HashSet[A, H] box)
: Bool val

Parameters

• that: HashSet[A, H] box

Returns

• Bool val

lt

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Return true if every element in this is also in that, and this has fewer elements than that.

fun box lt(
  that: HashSet[A, H] box)
: Bool val

Parameters

• that: HashSet[A, H] box

Returns

• Bool val

le

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Return true if every element in this is also in that.

fun box le(
  that: HashSet[A, H] box)
: Bool val

Parameters

• that: HashSet[A, H] box

Returns

• Bool val

gt

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Return true if every element in that is also in this, and this has more elements than that.

fun box gt(
  that: HashSet[A, H] box)
: Bool val

Parameters

• that: HashSet[A, H] box

Returns

• Bool val

ge

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Return true if every element in that is also in this.

fun box ge(
  that: HashSet[A, H] box)
: Bool val

Parameters

• that: HashSet[A, H] box

Returns

• Bool val

values

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Return an iterator over the values in the set.

fun box values()
: Iterator[A] ref^

Returns

• Iterator[A] ref^

compare

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fun box compare(
  that: HashSet[A, H] box)
: (Less val | Equal val | Greater val)

Parameters

• that: HashSet[A, H] box

Returns

• (Less val | Equal val | Greater val)

ne

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fun box ne(
  that: HashSet[A, H] box)
: Bool val

Parameters

• that: HashSet[A, H] box

Returns

• Bool val