struct Array::View(T)

• Array::View(T)
• Struct
• Value
• Object

Overview

An ArrayView is a read-only version of an Array. This is useful to give access to a non-modifiable array in a type-safe manner.

The functionality of ArrayView is limited by design, as it just delegates the methods defined by the Indexable mixin to the enclosed array.

arr = ArrayView.new([1, 2, 3, 4])
arr.size            # => 4
arr[2]              # => 3
arr.select &.even?  # => [2, 4]
arr.select! &.even? # does not compile
arr.sort            # does not compile

Included Modules

• Comparable(Indexable(T))
• Indexable(T)

Defined in:

Constructors

• .new(arr : Array(T))

Instance Method Summary

• #&(*args, **options)
• #&(*args, **options, &)
• #*(*args, **options)
• #*(*args, **options, &)
• #+(*args, **options)
• #+(*args, **options, &)
• #-(*args, **options)
• #-(*args, **options, &)
• #<=>(rhs : self) : Int32
• #<=>(*args, **options)
• #<=>(*args, **options, &)
• #[](*args, **options)
• #[](*args, **options, &)
• #[]?(*args, **options)
• #[]?(*args, **options, &)
• #|(*args, **options)
• #|(*args, **options, &)
• #compact(*args, **options)
• #compact(*args, **options, &)
• #each_repeated_permutation(*args, **options)
• #each_repeated_permutation(*args, **options, &)
• #first(*args, **options)
• #first(*args, **options, &)
• #flatten(*args, **options)
• #flatten(*args, **options, &)
• #index(*args, **options)
• #index(*args, **options, &)
• #inspect(io : IO) : Nil

  Appends this struct's name and instance variables names and values to the given IO.

• #last(*args, **options)
• #last(*args, **options, &)
• #map(*args, **options)
• #map(*args, **options, &)
• #map_with_index(*args, **options)
• #map_with_index(*args, **options, &)
• #reject(*args, **options)
• #reject(*args, **options, &)
• #remaining_capacity(*args, **options)
• #remaining_capacity(*args, **options, &)
• #repeated_permutations(*args, **options)
• #repeated_permutations(*args, **options, &)
• #reverse(*args, **options)
• #reverse(*args, **options, &)
• #rotate(*args, **options)
• #rotate(*args, **options, &)
• #sample(*args, **options)
• #sample(*args, **options, &)
• #select(*args, **options)
• #select(*args, **options, &)
• #shuffle(*args, **options)
• #shuffle(*args, **options, &)
• #size(*args, **options)
• #size(*args, **options, &)
• #skip(*args, **options)
• #skip(*args, **options, &)
• #skip_while(*args, **options)
• #skip_while(*args, **options, &)
• #sort(*args, **options)
• #sort(*args, **options, &)
• #sort_by(*args, **options)
• #sort_by(*args, **options, &)
• #take_while(*args, **options)
• #take_while(*args, **options, &)
• #to_a(*args, **options)
• #to_a(*args, **options, &)
• #to_s(*args, **options)
• #to_s(*args, **options, &)
• #transpose(*args, **options)
• #transpose(*args, **options, &)
• #uniq(*args, **options)
• #uniq(*args, **options, &)
• #unsafe_fetch(*args, **options)
• #unsafe_fetch(*args, **options, &)
• #unstable_sort(*args, **options)
• #unstable_sort(*args, **options, &)
• #unstable_sort_by(*args, **options)
• #unstable_sort_by(*args, **options, &)

Constructor Detail

Instance Method Detail

struct Point
  def initialize(@x : Int32, @y : Int32)
  end
end

p1 = Point.new 1, 2
p1.to_s    # "Point(@x=1, @y=2)"
p1.inspect # "Point(@x=1, @y=2)"