chewbranca

On the Viability of Erlang Releases and CouchDB

There has been some discussion on what versions of Erlang CouchDB should support, and what versions of Erlang are detrimental to use. Sadly there were some pretty substantial problems in the R15 line and even parts of R16 that are landmines for CouchDB. This post will describe the current state of things and make some potential recommendations on approach.

Scheduler Collapse

tsloughter

App	Description	Implementations
Dependency solver		https://github.com/erlware/relx/blob/master/src/rlx_depsolver.erl (needs to become separate app)
Semver parser	Strict semver 2.0.0 parser	https://github.com/nox/mouture
Fetcher	Given URI and path, download content at URI to path (support http, git, hg, svn, ...)
Naive version parser	Non-semver version parser
Unpacker	Open tar, zip, 7z, ...
Index
Sign/verify packages
Command line parser

andrzejsliwa

start() ->
    a_start(yourapp, permanent).
    
...

a_start(App, Type) ->
	start_ok(App, Type, application:start(App, Type)).

start_ok(_App, _Type, ok) -> ok;
start_ok(_App, _Type, {error, {already_started, _App}}) -> ok;

jbenet

a simple git branching model (written in 2013)

This is a very simple git workflow. It (and variants) is in use by many people. I settled on it after using it very effectively at Athena. GitHub does something similar; Zach Holman mentioned it in this talk.

Update: Woah, thanks for all the attention. Didn't expect this simple rant to get popular.

ruslander

%curl -s --user 'api:key-8av0ox9abrs2icvagny' \
%    https://api.mailgun.net/v2/bang.mailgun.org/messages \
%    -F from='Excited User <postmaster@bang.mailgun.org>' \
%    -F to=masquerade2ruslan@gmail.com \
%    -F subject='Hello' \
%    -F text='Testing some Mailgun awesomness!'

-module(mailgun).

-compile(export_all).

hoelzro

class Client
  def initialize
    @callbacks = {}

    set_key 'q', method(:quit)
  end 

  def set_key(key, callback)
    @callbacks[key] = callback
  end 

canton7

How to have local versions of tracked config files in git

This is a fairly common question, and there isn't a One True Answer.

These are the most common techniques:

If you can modify your application

simonmichael

# unregister broken GHC packages. Run this a few times to resolve dependency rot in installed packages.                                                                                                                                     
# ghc-pkg-clean -f cabal/dev/packages*.conf also works.                                                                                                                                                                                     
function ghc-pkg-clean() {
    for p in `ghc-pkg check $* 2>&1  | grep problems | awk '{print $6}' | sed -e 's/:$//'`
    do
        echo unregistering $p; ghc-pkg $* unregister $p
    done
}

# remove all installed GHC/cabal packages, leaving ~/.cabal binaries and docs in place.                                                                                                                                                     

mikeyk

from django.contrib.sessions.backends.base import SessionBase, CreateError
from django.conf import settings
from django.utils.encoding import force_unicode
import redis

class SessionStore(SessionBase):
    """ Redis store for sessions"""

    def __init__(self, session_key=None):
        self.redis = redis.Redis(

bryanl

# ~/.tmux.conf
#
# See the following files:
#
#   /opt/local/share/doc/tmux/t-williams.conf
#   /opt/local/share/doc/tmux/screen-keys.conf
#   /opt/local/share/doc/tmux/vim-keys.conf
#
# URLs to read:
#