class

Matrix(T)

Inherits Enumerable < Reference < Object

Class methods

[](*rows : Array(U)) forall U

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build(row_size : Int, column_size : Int = row_size, & : Int32, Int32 -> T)

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column_vector(column : Array(T))

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columns(columns : Array(Array(T)))

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combine(*matrices, &)

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diagonal(*values)

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empty(row_size = 0, column_size = 0)

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hstack(*matrices)

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identity(n : Int)

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row_vector(row : Array(T))

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rows(rows : Array(Array(T)), copy = false)

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scalar(n : Int, value : T)

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vstack(*matrices : Matrix(T))

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zero(row_size : Int, column_size : Int = row_size)

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Instance methods

&(other : Matrix(U)) forall U

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*(other : Matrix(U)) forall U

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*(other) forall U

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**(exponent : Int)

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+(other : Matrix(U)) forall U

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-(other : Matrix(U)) forall U

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/(other) forall U

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//(other) forall U

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==(other : Matrix(U)) forall U

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[](i : Int, j : Int)

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[]=(i : Int, j : Int, value : T)

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[]?(i : Int, j : Int)

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^(other : Matrix(U)) forall U

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|(other : Matrix(U)) forall U

adjugate

antisymmetric?

clone

cofactor(i : Int, j : Int)

column_size

det

diagonal?

each(which = :all, &block : T -> )

Must yield this collection's elements to the block.

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each(which = :all)

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each_with_index(which = :all, & : T -> )

Iterates over the collection, yielding both the elements and their index.

["Alice", "Bob"].each_with_index do |user, i|
  puts "User ##{i}: #{user}"
end

Prints:

User # 0: Alice
User # 1: Bob

Accepts an optional offset parameter, which tells it to start counting from there. So, a more human friendly version of the previous snippet would be:

["Alice", "Bob"].each_with_index(1) do |user, i|
  puts "User ##{i}: #{user}"
end

Which would print:

User # 1: Alice
User # 2: Bob

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empty?

Returns true if self does not contain any element.

([] of Int32).empty? # => true
([1]).empty?         # => false
[nil, false].empty?  # => false

#present? returns the inverse.

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first_minor(i : Int, j : Int)

inv

row(i : Int)

row_size

skew_symmetric?

square?

swap_column(i : Int, j : Int)

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swap_row(i : Int, j : Int)

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sweep(extended? : Bool = false) : Int32

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symmetric?

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to_s(io : IO)

Appends a short String representation of this object which includes its class name and its object address.

class Person
  def initialize(@name : String, @age : Int32)
  end
end

Person.new("John", 32).to_s # => #<Person:0x10a199f20>

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unsafe_fetch(i : Int, j : Int)

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unsafe_put(i : Int, j : Int, value : T)

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