Functions for working with integers.
Returns the ordered digits for the given non-negative integer
Parses a text representation of an integer
Returns a charlist which corresponds to the text representation of the given integer
Returns a charlist which corresponds to the text representation of integer in the given base
Returns a binary which corresponds to the text representation of integer
Returns a binary which corresponds to the text representation of integer in the given base
Returns the integer represented by the ordered digits
Determines if an integer is even
Determines if integer is odd
digits(non_neg_integer, pos_integer) :: [non_neg_integer, ...]
Returns the ordered digits for the given non-negative integer.
An optional base value may be provided representing the radix for the returned digits. This one can be an integer >= 2.
iex> Integer.digits(101)
[1, 0, 1]
iex> Integer.digits(170, 2)
[1, 0, 1, 0, 1, 0, 1, 0]parse(binary, 2..36) :: {integer, binary} | :error | no_return Parses a text representation of an integer.
An optional base to the corresponding integer can be provided. If base is not given, 10 will be used.
If successful, returns a tuple in the form of {integer, remainder_of_binary}. Otherwise :error.
Raises an error if base is less than 2 or more than 36.
If you want to convert a string-formatted integer directly to a integer, String.to_integer/1 or String.to_integer/2 can be used instead.
iex> Integer.parse("34")
{34, ""}
iex> Integer.parse("34.5")
{34, ".5"}
iex> Integer.parse("three")
:error
iex> Integer.parse("34", 10)
{34, ""}
iex> Integer.parse("f4", 16)
{244, ""}
iex> Integer.parse("Awww++", 36)
{509216, "++"}
iex> Integer.parse("fab", 10)
:error
iex> Integer.parse("a2", 38)
** (ArgumentError) invalid base 38to_charlist(integer) :: charlist
Returns a charlist which corresponds to the text representation of the given integer.
Inlined by the compiler.
iex> Integer.to_charlist(123)
'123'
iex> Integer.to_charlist(+456)
'456'
iex> Integer.to_charlist(-789)
'-789'
iex> Integer.to_charlist(0123)
'123'to_charlist(integer, 2..36) :: charlist
Returns a charlist which corresponds to the text representation of integer in the given base.
base can be an integer between 2 and 36.
Inlined by the compiler.
iex> Integer.to_charlist(100, 16)
'64'
iex> Integer.to_charlist(-100, 16)
'-64'
iex> Integer.to_charlist(882681651, 36)
'ELIXIR'to_string(integer) :: String.t
Returns a binary which corresponds to the text representation of integer.
Inlined by the compiler.
iex> Integer.to_string(123)
"123"
iex> Integer.to_string(+456)
"456"
iex> Integer.to_string(-789)
"-789"
iex> Integer.to_string(0123)
"123"to_string(integer, 2..36) :: String.t
Returns a binary which corresponds to the text representation of integer in the given base.
base can be an integer between 2 and 36.
Inlined by the compiler.
iex> Integer.to_string(100, 16)
"64"
iex> Integer.to_string(-100, 16)
"-64"
iex> Integer.to_string(882681651, 36)
"ELIXIR"undigits([integer], integer) :: integer
Returns the integer represented by the ordered digits.
An optional base value may be provided representing the radix for the digits. This one can be an integer >= 2.
iex> Integer.undigits([1, 2, 3])
123
iex> Integer.undigits([1, 4], 16)
20
iex> Integer.undigits([])
0Determines if an integer is even.
Returns true if the given integer is an even number, otherwise it returns false.
Allowed in guard clauses.
iex> Integer.is_even(10)
true
iex> Integer.is_even(5)
false
iex> Integer.is_even(-10)
true
iex> Integer.is_even(0)
trueDetermines if integer is odd.
Returns true if the given integer is an odd number, otherwise it returns false.
Allowed in guard clauses.
iex> Integer.is_odd(5)
true
iex> Integer.is_odd(6)
false
iex> Integer.is_odd(-5)
true
iex> Integer.is_odd(0)
false
© 2012–2017 Plataformatec
Licensed under the Apache License, Version 2.0.
https://hexdocs.pm/elixir/1.3.3/Integer.html