bjhaid

# split windows like vim
# vim's definition of a horizontal/vertical split is reversed from tmux's
bind s split-window -v -c "#{pane_current_path}"
bind v split-window -h -c '#{pane_current_path}'

bind ^s split-window -v -c "#{pane_current_path}"
bind ^v split-window -h -c "#{pane_current_path}"

# move around panes with hjkl, as one would in vim after pressing ctrl-w
bind h select-pane -L

bjhaid

works in erlang

1> Bbsl = fun(Bin,Shift) -> <<_:Shift,Rest/bits>> = Bin, <<Rest/bits,0:Shift>> end.
#Fun<erl_eval.12.50752066>

fails in elixir (1.3.4)

bjhaid

Internet Scale Services Checklist

A checklist for designing and developing internet scale services, inspired by James Hamilton's 2007 paper "On Desgining and Deploying Internet-Scale Services."

• http://mvdirona.com/jrh/talksandpapers/jamesrh_lisa.pdf

Basic tenets

• Does the design expect failures to happen regularly and handle them gracefully?
• Have we kept things as simple as possible?

bjhaid

KafkaEx.create_worker(:foo, uris: Application.get_env(:kafka_ex, :brokers), consumer_group: "bar")
Enum.each(1..1000, fn x -> KafkaEx.produce("foo", 0, "bar#{x}") end) 
KafkaEx.fetch("foo", 0, worker_name: :foo, max_bytes: 100)   
# output
"""
[%KafkaEx.Protocol.Fetch.Response{partitions: [%{error_code: 0,
     hw_mark_offset: 1002, last_offset: 2,
     message_set: [%KafkaEx.Protocol.Fetch.Message{attributes: 0,
       crc: 2491399380, key: "", offset: 0, value: "bar"},
      %KafkaEx.Protocol.Fetch.Message{attributes: 0, crc: 702483308, key: "",

bjhaid

[general]
transport=udp
localnet=192.168.29.0/255.2
directmedia=nonat
externaddr=x.x.x.x
disallow=all
bindaddr=192.168.29.184
context=public             
allowoverlap=no
udpbindaddr=192.168.29.184

bjhaid

VigenereHexXOR = fun(Plain, KeyList) -> G = fun([H|T], [B|R], Q, List, F) ->
    F(T, R, Q, [H bxor list_to_integer(B, 16)|List], F);
  (Act, [], Q, List, F) -> 
    F(Act, Q, Q, List, F);
  ([], _, _, List, _) -> [integer_to_list(X, 16) || X <- lists:reverse(List)]
  end,
  G(Plain, KeyList, KeyList, [], G)
end.

VigenereHexXOR("cool!", ["01", "3F"]).

bjhaid

_mix()
{
  local cur prev opts
  COMPREPLY=()
  cur="${COMP_WORDS[COMP_CWORD]}"
  prev="${COMP_WORDS[COMP_CWORD-1]}"
  if [[ ! -f /tmp/__mix_completion__ ]]; then
    opts=$(for i in `mix help | grep -ve "current:" | grep -ve "iex" | awk '{ print $2" " }'`; do echo $i; done);
    echo $opts > /tmp/__mix_completion__;
  else

bjhaid

awk 'BEGIN {srand()} !/^$/ { if (rand() <= .01) print $0}'

bjhaid

 -module(test).                        
 -compile([export_all]).               
                                       
 -spec foo(<<_:32, _:_*8>>) -> list. 
 foo(<<X:32, Y/binary>>) -> [X, Y].    

bjhaid

-module(isbn).
-export([generate_signed_url/2]).

%%http://docs.aws.amazon.com/AWSECommerceService/latest/DG/rest-signature.html

generate_signed_url(Secret, Url) -> [H, T] = sort_url_params(append_timestamp(Url)),
  H ++ "?" ++ T ++ "&Signature=" ++ hash_url_params(Secret, prepend_request_header(T)).

encode_url(Url) -> http_uri:encode(Url).