Iptrie.reduce

You're seeing just the function reduce, go back to Iptrie module for more information.

reduce(trie, acc, fun)

Specs

reduce(t(), any(), (Pfx.t(), any(), any() -> any())) :: any()

Invokes fun on all prefix,value-pairs in all radix trees in trie.

The function fun is called with the prefix (a Pfx.t/0 struct), value and acc accumulator and should return an updated accumulator. The result is the last accumulator returned.

Example

iex> ipt = new()
...> |> put("1.1.1.0/24", 1)
...> |> put("2.2.2.0/24", 2)
...> |> put("acdc:1975::/32", 3)
...> |> put("acdc:2021::/32", 4)
iex>
iex> reduce(ipt, 0, fn _pfx, value, acc -> acc + value end)
10
iex>
iex> reduce(ipt, %{}, fn pfx, value, acc -> Map.put(acc, "#{pfx}", value) end)
%{
  "1.1.1.0/24" => 1,
  "2.2.2.0/24" => 2,
  "acdc:1975:0:0:0:0:0:0/32" => 3,
  "acdc:2021:0:0:0:0:0:0/32" => 4
}

reduce(trie, type, acc, fun)

Specs

reduce(t(), type(), any(), (Pfx.t(), any(), any() -> any())) :: any()

Invokes fun on each prefix,value-pair in the radix tree of given type in trie.

The function fun is called with the prefix (a Pfx.t/0 struct), value and acc accumulator and should return an updated accumulator. The result is the last accumulator returned.

Example

iex> ipt = new()
...> |> put("1.1.1.0/24", 1)
...> |> put("2.2.2.0/24", 2)
...> |> put("acdc:1975::/32", 3)
...> |> put("acdc:2021::/32", 4)
iex>
iex> reduce(ipt, 32, 0, fn _pfx, value, acc -> acc + value end)
3
iex> reduce(ipt, 48, 0, fn _pfx, value, acc -> acc + value end)
0
iex> reduce(ipt, 128, 0, fn _pfx, value, acc -> acc + value end)
7