Elixir Programming Examples

Elixir Enumerables Reduce

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res = Enum.reduce([1, 2, 3, 4], 5, fn(x, accum) -> x + accum end)
IO.puts(res)

Elixir Enumerables Each

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Enum.each(["Hello", "Every", "one"], fn(s) -> IO.puts(s) end)

Elixir Enumerables Any

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res = Enum.any?([1, 2, 3, 4], fn(s) -> rem(s,2) == 1 end)
IO.puts(res)

Elixir Enumerables All

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res = Enum.all?([1, 2, 3, 4], fn(s) -> rem(s,2) == 1 end) 
IO.puts(res)

Elixir Loops

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defmodule Loop do
   def print_multiple_times(msg, n) when n <= 1 do
      IO.puts msg
   end

   def print_multiple_times(msg, n) do
      IO.puts msg
      print_multiple_times(msg, n - 1)
   end
end

Loop.print_multiple_times("Hello", 10)

Elixir Printing Each Element in List

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a = ["Hey", 100, 452, :true, "People"]
defmodule ListPrint do
   def print([]) do
   end
   def print([head | tail]) do 
      IO.puts(head)
      print(tail)
   end
end

ListPrint.print(a)

Elixir Recursion

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defmodule Math do
   def fact(res, num) do
   if num === 1 do
      res
   else
      new_res = res * num
      fact(new_res, num-1)
      end
   end
end

IO.puts(Math.fact(1,5))

Named Functions Short Hand Notation in Elixir

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defmodule Math do
   def sum(a, b), do: a + b
end
IO.puts(Math.sum(5, 6))

Elixir Named Functions

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defmodule Math do
   def sum(a, b) do
      a + b
   end
end

IO.puts(Math.sum(5, 6))

Elixir Pattern Matching Functions

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handle_result = fn
   {var1} -> IO.puts("#{var1} found in a tuple!")
   {var_2, var_3} -> IO.puts("#{var_2} and #{var_3} found!")
end
handle_result.({"Hey people"})
handle_result.({"Hello", "World"})

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