class Athena::ORM::ArrayCollection(T)
inherits Athena::ORM::BaseCollection

A simple wrapper around Array implementing the AORM::Collection interface.

Collection fields are initialized with an empty one; see AORM::Collection for how the ORM manages them from there.

property groups : AORM::Collection(Group) = AORM::ArrayCollection(Group).new

It has no ties to the ORM, so it's also suitable for building up a collection before assigning it to an entity.

Included modules

Athena::ORM::Collection Indexable

Constructors

.new(elements : Array(T) = [] of T)

Creates a collection holding a copy of elements.

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.new(elements : Enumerable(T))

Creates a collection holding the elements of elements.

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Methods

#<<(element : T) : self

Adds an element to the collection (alias for add).

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#[]=(index : Int, value : T) : T

Sets the element at the given index.

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#[]?(index : Int) : T | Nil

Returns the element at the given index, or nil if out of bounds.

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#add(element : T) : Nil

Adds an element to the collection.

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#clear : Nil

Removes all elements from the collection.

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#delete(element : T) : T | Nil

Removes every occurrence of element from the collection. Returns the removed element, or nil if not found.

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#first? : T | ::Nil

Returns the first element, or nil if empty.

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#includes?(element : T) : Bool

Returns whether the collection contains the element.

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#last? : T | ::Nil

Returns the last element, or nil if empty.

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#remove_element(element : T) : Bool

Removes every occurrence of element, and returns whether it was present.

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#size : Int32

Returns the number of elements in the collection.

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#to_a : Array(T)

Returns a copy of the elements array.

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#unsafe_fetch(index : Int) : T

Returns the element at the given index, without doing any bounds check.

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