To convert a binary number to a base 10 (decimal) integer in Elixir, you can use the built-in `String.to_integer/2`

function. This function takes two arguments - the binary number as a string and the base of the number (which is 2 for binary numbers). Here is an example of how you can convert a binary number to a decimal integer in Elixir:

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binary_number = "1010" decimal_integer = String.to_integer(binary_number, 2) IO.puts(decimal_integer) |

In this example, the binary number "1010" is converted to the decimal integer 10 using the `String.to_integer/2`

function with a base of 2. The `IO.puts`

function is then used to output the decimal integer to the console.

This is a simple and effective way to convert binary numbers to decimal integers in Elixir.

## What is the formula for converting binary to decimal in Elixir?

In Elixir, you can convert binary to decimal using the `Base.decode/2`

function. Here is an example:

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binary = "1101" decimal = Base.decode16!(binary) IO.puts(decimal) |

This will output `13`

, which is the decimal equivalent of the binary number `1101`

. The `Base.decode/2`

function takes two arguments - the binary number as a string and the base of the number system you are converting from (in this case, 2 for binary).

## What are the different approaches to converting binary to decimal in Elixir?

There are several different approaches to converting binary to decimal in Elixir:

**Using the built-in Integer.parse/1 function**: This function can be used to parse a binary string and convert it to a decimal number. For example:

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binary = "1101" decimal = binary |> Integer.parse(:binary) |> elem(0) |

**Using pattern matching and recursion**: This approach involves breaking down the binary number into individual bits and calculating the decimal equivalent recursively. Here is an example implementation:

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defmodule BinaryToDecimal do def convert(binary) do convert(binary, 0) end defp convert(<<>>, acc), do: acc defp convert(<<bit :: size(1), rest :: binary>>, acc) do converted_bit = bit * :math.pow(2, byte_size(rest)) convert(rest, acc + converted_bit) end end # Usage binary = <<1, 1, 0, 1>> decimal = BinaryToDecimal.convert(binary) |

**Using the**:binary.bin_to_list/1 and Enum.reduce/2 functions: This approach involves converting the binary to a list of bits and then iterating over the list to calculate the decimal equivalent. Here is an example implementation:

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binary = <<1, 0, 1, 1>> decimal = :binary.bin_to_list(binary) |> Enum.reverse |> Enum.with_index() |> Enum.reduce(0, fn {bit, i}, acc -> acc + bit * :math.pow(2, i) end) |

## How to change binary to decimal in Elixir?

To convert a binary number to a decimal number in Elixir, you can use the `:binary.decode_unsigned/1`

function from the `:binary`

module. Here is an example of how to convert a binary number to a decimal number:

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binary_number = <<1010::size(4)>> decimal_number = :binary.decode_unsigned(binary_number) IO.puts(decimal_number) |

In this example, the binary number is `1010`

and its decimal equivalent is `10`

. The `:binary.decode_unsigned/1`

function is used to convert the binary number to a decimal number.

You can also define a function to convert binary to decimal in Elixir:

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def binary_to_decimal(binary_number) do :binary.decode_unsigned(binary_number) end binary_number = <<1010::size(4)>> decimal_number = binary_to_decimal(binary_number) IO.puts(decimal_number) |

This function can be used to convert any binary number to its decimal equivalent by passing the binary number as an argument to the function.