binarytemple

##Using Force Replace to Change a nodes IP address. ###Objective Previous to Riak 1.2, a cluster node's IP address could be changed by running riak-admin reip on each cluster node. As of Riak 1.2, this method has been replaced with riak-admin cluster force-replace which is safer and does not require any downtime.

###Scenario

Riak is running in a cluster of five nodes.

• [email protected] on node1.localdomain (192.168.17.11)(64.214.83.25)
• [email protected] on node2.localdomain (192.168.17.12)(64.214.83.26)

binarytemple

Elixir - trivial struct updating

defmodule User do               
  defstruct name: nil , age: nil
end                             

iex(15)> %User{}

binarytemple

% -*- coding: utf8 -*-

-module(sockets_example).
-export([main/0]).

main() ->
    io:format("~nUNIX sockets:~n++++++++++++++~n"),
    unix_sockets().

unix_sockets() ->

binarytemple

yq < ./docker-compose.yml ".services| to_entries []| { id: .key, ports: .value.ports }"

binarytemple

diff --git a/.gitignore b/.gitignore
index b43c124..6649665 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,6 @@ erl_crash.dump
 examples/rendered_output
 src/erlydtl_parser.erl
 *~
+_build/
+ebintest/

binarytemple

iex(20)> Stream.iterate(1,&(&1+1)) |> Stream.chunk(5) |> Stream.map(&({List.first(&1),&1}))  |>  Enum.take(100)
[{1, [1, 2, 3, 4, 5]}, {6, [6, 7, 8, 9, 10]}, {11, [11, 12, 13, 14, 15]},
 {16, [16, 17, 18, 19, 20]}, {21, [21, 22, 23, 24, 25]},
 {26, [26, 27, 28, 29, 30]}, {31, [31, 32, 33, 34, 35]}, {36, '$%&\'('},
 {41, ')*+,-'}, {46, './012'}, {51, '34567'}, {56, '89:;<'}, {61, '=>?@A'},
 {66, 'BCDEF'}, {71, 'GHIJK'}, {76, 'LMNOP'}, {81, 'QRSTU'}, {86, 'VWXYZ'},
 {91, '[\\]^_'}, {96, '`abcd'}, {101, 'efghi'}, {106, 'jklmn'}, {111, 'opqrs'},
 {116, 'tuvwx'}, {121, 'yz{|}'}, {126, [126, 127, 128, 129, 130]},
 {131, [131, 132, 133, 134, 135]}, {136, [136, 137, 138, 139, 140]},
 {141, [141, 142, 143, 144, 145]}, {146, [146, 147, 148, 149, 150]},

binarytemple

*** Welcome to IELM ***  Type (describe-mode) for help.
ELISP> 
ELISP> 
ELISP> 1
1 (#o1, #x1, ?\C-a)
ELISP> '(1 2 4 5)
(1 2 4 5)

ELISP> [1 2]
[1 2]

binarytemple

#!/usr/bin/env python

import getopt
import sys
import keyring
import getpass

"""
Password wrapper, get and store passwords to system keyring
License: Apache Software License

binarytemple

Generate a new Elixir project using mix and add cowboy and plug as dependencies in mix.exs:

  defp deps do
    [
      {:cowboy, "~> 1.0.0"},
      {:plug, "~> 0.8.1"}
    ]
  end

binarytemple

• Interesting paper, Programming Efficiently with Binaries and Bit Strings
• Good reference guide
• Erlang internals, data type memory usage
• Don't get confused by the binary to integer stuff
• Also pulled down the source code from the book - Erlang Programming by Francesco Cesarini and Simon Thompson

101> h().
81: bitstring_to_list(D)