Edgar González

One of most important thing about startups is that you can collect usage metrics in real time. However, being able to make decisions with this data is not easy. It’s important to understand how to collect and use these metrics, and develop a decision-making framework for startup development. The framework should be based on goals that are measured through discrete users or startup events that have either user or business value.

Dave McClure has been talking about startup metrics since 2009. The first time I saw his talk was during TechStars NYC class of summer 2011.

McClure define five main ways to bucket the events you’re measuring: Acquisition, Activation, Retention, Referral, Revenue (AARRR => the pirate reference)

• Acquisition: The various ways you acquire users/customers, via the distribution channels that bring them to your product or service (social media & social networks, apps & widgets, traditional PR, affiliates, etc).
• Activation: The “happy” first experience where users take some kind of activation step (click on a link, provide an email address, buy something).
• Retention: Creating repeat and regular visits from your users (weekly emails, blog posts, periodic notifications).
• Referral: Users tell other people about your service (viral loop, forward email to a friend, send a link).
• Revenue: Users conduct some monetization behavior, either direct (e-commerce, subscriptions) or indirect (advertising).

In Scribd there is a good introduction about stock & options for tech entrepreneur or startup employee

(Also there is a kindle version available in amazon)

bijan:

Thanks to the combination of smartphone proliferation, the app store distribution model, FB Open Graph integration and Twitter, we are seeing mobile apps reach incredible metrics very fast - particularly in daily installs and sign ups.

It’s has me thinking about a number of things:

FB Open…

If you’re like me, a fan of rebasing local work before publishing, maybe you receive this error:

"interactive rebase already started"

This happens when you abort in the middle of a rebase.

The way to fix it is using:

git rebase -i --abort

Introducción a NoSQL

Charla que dí en el @BogotaConf el 31 de Octubre de 2011.

• Prezi presentation 
• Video with simultaneous english translation

(or Ruby is what it is, thanks to emacs)

by @yukihiro_matz

I sync automatically my passwords between my macbook, ubuntu laptop and iPhone, using KeePass and Dropbox.

KeePass is a cross-platform (Windows, Linux, Mac) open-source password manager that enables you to safely lock away your passwords, PINs, credit cards in a local encrypted file. 

• Create a Dropbox account, and install the Dropbox client to all your devices you want to sync (in my case macbook, ubuntu laptop and iPhone).
• Install KeePass client to all your devices.
• For the Desktop I’m using KeePassX (Mac, Windows, Linux [via your package repository]). 
• For iPhone I’m using MiniKeePass (free in AppStore and open-source in GitHub)
• There is a client for Android - KeePassDroid (I didn’t test it)
• Create your password database file via your desktop and store it into Dropbox. The file should be synced between all your devices.
• In your iPhone open Dropbox, and look for the file. MiniKeePass should be launched, enter your credentials, and that’s it

The next syncs needs on the iPhone needs manual intervention:

• When you make changes on the iPhone, they remain local (even if the password file was in Dropbox) you have to export the password file from MiniKeePass to Dropbox again (overwriting the original file).
• If password changes are made from another system, MiniKeePass will not notice them even if Dropbox has already sync’d. You need to re-import the file in MiniKeePass from Dropbox.

More info in this post: Using MiniKeePass with Dropbox

Hace un par de semanas conversé con Anairene (@edelweiss) sobre Piictu en el programa de radio Makina con La Mega.

Para los que quieran oirla aquí les dejo el link al podcast del Programa No 208 - Piictu de Makina con La Mega.

Gracias una vez más a Nacarid y Anairene

Movistar no da soporte para el uso de su Internet Móvil en Mac OS X 10.7 (Lion), solamente soportan desde 10.4 hasta 10.6. Sin embargo, si funciona, he aquí lo que yo hice para configurarlo:

De la página de Movistar sigues las instrucciones para descargar e instalar el Escritorio Movistar. 

Cuando lo instales es muy probable que te de un error como me ocurrió a mi

No te preocupes, hazle un restart a la máquina y en tus aplicaciones vas a tener el “Escritorio movistar Latam”, arranca la aplicación, en mi caso la aplicación detectaba el modem Huawei pero no se conectaba, si te ocurre lo mismo, ve a “Escritorio Movistar Settings” y vas a “My Internet connections”, ahi editas la conexión por defecto o creas una nueva (y la luego la marcas como por defecto).

Los cambios que hay que hacer en la conexión son:

• Identification: Username y Password dejarlos en blanco 
• APN: ingresas internet.movistar.ve 
• DNS: ingresas 200.35.65.3 y 200.35.65.4 
• Proxy: “Do not use proxy” 

Guardas los cambios (recuerda que la conexión debe ser la usada por defecto) Y eso es todo, ya deberías poder conectarte

In ActionMailer (Rails 3) you can’t decide not to send an email. For instance, you have the following mailer:

class FooMailer < ActionMailer::Base
  def bar_email
    if some_condition
      mail(...)
    else
      # Can I do nothing? No :-(
    end
  end
end

If you invoke FooMailer.bar_email.deliver!, when same_condition is false you will get the following error:

ArgumentError: A sender (Return-Path, Sender or From) required to send a message

The workaround for that is move the condition to the place where you are making the call to FooMailer.bar_email.deliver!

To add your Heroku application as a remote in your git repository, use the following command:

git remote add heroku-remote git@heroku.com:project.git

Where project.git is your heroku application, and heroku-remote the name you want for the remote, in my case I usually have several remotes, one for production, staging and dev

Esta es la presentacion que di en el BogotaConf (@bogotaconf) sobre NoSQL

(Update 19/Abr/2012): Agregado el video de la charla

Edit the file: /path/to/SublimeText2/Packages/Ruby/Ruby.sublime-build to contain this:

{
    "cmd": ["/path/to/ruby/bin/ruby", "-cw", "$file"],
    "file_regex": "^(...*?):([0-9]*):?([0-9]*)",
    "selector": "source.ruby"
}

Then create the following file /path/to/SublimeText2/Packages/User/ruby_check.py:

import sublime, sublime_plugin

class rubyCheck(sublime_plugin.EventListener):
    def on_post_save(self, view):
        if view.file_name()[-3:] == '.rb':
            view.window().run_command("build")

Now when you save your ruby file automatically the syntax will be checked

Here the gist

from: me

to: my future me

If you’re working in your feature-branch:

git checkout feature-branch

and by mistake you pull from a wrong branch (usually master or develop):

git pull origin different-branch

You can fix it with this:

git reset --hard origin/feature-branch