nivertech

Multiple SSH Keys settings for different github account

create different public key

create different ssh key according the article Mac Set-Up Git

$ ssh-keygen -t rsa -C "your_email@youremail.com"

nivertech

deb http://binaries.erlang-solutions.com/debian precise contrib


wget -O - http://binaries.erlang-solutions.com/debian/erlang_solutions.asc | sudo apt-key add -
sudo apt-get update
sudo apt-get install esl-erlang

nivertech

erlang$1:::*-function-entry
{
  self->funcall_entry_ts[copyinstr(arg1)] = vtimestamp;
}
erlang$1:::function-return
/self->funcall_entry_ts[copyinstr(arg1)]/
{
  @time[copyinstr(arg1)] = quantize((vtimestamp - self->funcall_entry_ts[copyinstr(arg1)] ) / 1000);
}

nivertech

image.gallery <- function(url, ncol = 3L) {

## This function reformats the contents of a Craigslist search result URL
## into an image gallery, opened into the default browser
##
## Inputs:
##    - url:  a Craigslist search URL as created by search.url
##    - ncol: the number of columns for the output image gallery
##
## Output: none. As a side effect, a browser is opened.

nivertech

An RSVP-list demo on top of Riak 2.0 Datatypes

This is a purely in-browser demo of Riak 2.0's sets datatype. The application code uses React.js and jquery.

To get started, make a 5-node devrel cluster of the 2.0 preview using these instructions. After your cluster is built, make a bucket-type for sets:

cd dev/dev1
bin/riak-admin bucket-type create sets '{"props":{"datatype":"set","allow_mult":true}}'
bin/riak-admin bucket-type activate sets

nivertech

Installation of Erlang R16B03-1 and 17.0-rc2 to OS X 10.9.2 with Xcode and wxWidgets 3.0.0

• Note: always set umask 022 for system-shared libraries
• See http://blog.equanimity.nl/blog/2014/02/09/erlang-r17-rc1-on-osx-with-wx-and-a-working-observer/ for the details
• wxWidgets 3.0.0 works the same in R16B03-1 and 17.0-rc2
• Note well: wx:demo() on OS X 10.9.2 with wxWidgets 3.0.0 is still unstable, though observer:start() is more stable.
• If you really don't have time, try Erlang Solutions' 32bit (not 64bit) distribution at https://www.erlang-solutions.com/downloads/download-erlang-otp to use it as a debugging console.
• Update 28-FEB-2014 0230UTC: Leo Liu reports brew install wxmac --disable-monolithic will do. See http://erlang.org/pipermail/erlang-questions/2014-February/077952.html.

Installing wxWidgets

nivertech

var redisScan = require('redisscan');
var redis     = require('redis');
var riak      = require('riakpbc');
var async     = require('async');
var args      = require('optimist')
    .usage('--import or --export Redis archives in Riak\nUsage: $0')
    .boolean('import')
    .boolean('export')
    .boolean('debug')
    .describe('import', "Import from Riak to Redis")

nivertech

Docker Cheat Sheet

Why

Why Should I Care (For Developers)

I don't care, I just want a dev environment

• https://github.com/relateiq/docker_public/
• docker-devenv

nivertech

-module(helpers).

is_pid_alive(Pid) when node(Pid) =:= node() ->
  is_process_alive(Pid);
is_pid_alive(Pid) ->
	lists:member(node(Pid), nodes()) andalso
	(rpc:call(node(Pid), erlang, is_process_alive, [Pid]) =:= true).

get_current_time() ->
  Now = calendar:local_time(),

nivertech

# Erlang R16B HiPE with Rebar
#
# VERSION               0.0.1

FROM      base
MAINTAINER Son Tran-Nguyen "sntran@inhuman.io"

RUN apt-get update
RUN apt-get install -y git build-essential libncurses5-dev openssl libssl-dev curl
# For HiPE, requires M4