struct StaticArray(T, N)

Overview

A fixed-size, stack allocated array.

StaticArray is a generic type with type argument T specifying the type of its elements and N the fixed size. For example StaticArray(Int32, 3) is a static array of Int32 with three elements.

Instantiations of this static array type:

StaticArray(Int32, 3).new(42)           # => StaticArray[42, 42, 42]
StaticArray(Int32, 3).new { |i| i * 2 } # => StaticArray[0, 2, 4]
StaticArray[0, 8, 15]                   # => StaticArray[0, 8, 15]

This type can also be expressed as Int32[3] (only in type grammar). A typical use case is in combination with uninitialized:

ints = uninitialized Int32[3]
ints[0] = 0
ints[1] = 8
ints[2] = 15

For number types there is also Number.static_array which can be used to initialize a static array:

Int32.static_array(0, 8, 15) # => StaticArray[0, 8, 15]

The generic argument type N is a special case in the type grammar as it doesn't specify a type but a size. Its value can be an Int32 literal or constant.

Included Modules

Defined in:

mass_assignable/to_attribute.cr

Class Method Summary

Instance Method Summary

Instance methods inherited from module Enumerable(T)

to_attribute to_attribute

Instance methods inherited from class Object

to_attribute to_attribute

Class methods inherited from class Object

from_attribute(value) from_attribute

Class Method Detail

def self.from_attribute(value : Indexable) #

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Instance Method Detail

def to_attribute #

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