That time when global quarantine liberated digital services.

There has been a sudden, dramatic step-wise improvement in digital services in Trinidad & Tobago.

You can place an order via WhatsApp for groceries in Trinidad & Tobago now. From one of the largest chains in the country.

Many government agencies are available in a real-time way on social media. Providing updates of a COVID and even non-COVID nature

A local bank has started to enable sending of money that the recipient has access to in 1 day, down from 4 to 5. The others, I expect are sure to follow.

I’m here for all of it. Maybe this activity is just merchants and other service providers responding to the change in environment. Everyone’s online, and the only way to get people to interact meaningfully with your service is by meeting them where they are at.

For now, I’ll list these services as I hear about them. I won’t celebrate too loudly, because, you know, many people have been clamoring for this for a long time.

Parse a pdf, quickly

  1. You have docker installed.
  2. You don’t have time to futz around with PDFs

If you have a PDF you’d like to get tables out of, tabula works a dream. When last I used it successfully, I was on my mac. I jumped on to a windows machine, and I just couldn’t get it to run.

*a few googles later*

I found a docker command that hosts a web API that gives access to tabula:

docker run -p 8080:8080 -e HOST=0.0.0.0 gavinkflam/tabula-api:1.0.0

At the readme for this container, the example was this:

curl -X POST -H 'Content-Type: multipart/form-data' \
  -F 'file=@my-pdf-file.pdf' -F 'guess=true' -F 'pages=all' \
  http://localhost:8080/api/extract

Thankfully, because of WSL, I just popped over into bash and I had tables in a flash 😎

I’m a student, where can I Azure? (freeness welcome)

Whenever I teach cloud technologies, I emphasize practical applications, even for the newest students. This really helps the topic come alive and allows the students to engage the material in a more realistic way.

As it turns out, a few of my friends reached out to me about Azure resources for learners, so, I thought I’d just jot down a few resources here.

Azure for students

So, a simple search online should point you here:

https://azure.microsoft.com/en-us/free/students/

One of the first questions that come up is “Am I worthy eligible?”, which is helpfully answered in the FAQ:

Azure for Students is available only to students who meet the following requirements. You must affirm that you are age 18 or older and attend an accredited, degree-granting two-year or four-year educational institution where you’re a full-time student in a STEM-related field. You must verify your academic status through your organization’s email address . This offer is not available for use in a massive open online course (MOOC) or in other professional trainings from for-profit organizations. The Azure for Students offer is limited to one per eligible student, is non-transferable, and cannot be combined with any other offers unless otherwise permitted by Microsoft. Azure for Students has a limited supply of activations and the offer is available only while supplies last. Each region has a limited number of Azure for Students offers available, and your geographical location may run out of supplies while the offer is still available in other regions. Microsoft may terminate this offer at our sole discretion. Other restrictions may apply.

Azure for faculty

Now, if you’re an educator, teaching assistant or other faculty, you can sign up for open source content – I’ve used this, it’s legit and the github repo is very active! As well as get a free Azure account for doing demos and showing how the stuff works.

Just plain old free Azure stuff

If you aren’t enrolled anywhere and just want to learn Azure stuff, there are also a lot of free-levels that you can use to get started.

https://azure.microsoft.com/en-us/free/

When you access this option, they’ll ask for a credit card number – this is for verification, they won’t charge you automatically unless you choose to upgrade. You have to choose to upgrade, it’s not going to sneak up on you.

Some azure services have levels that are always free, like Azure App Services, Azure Functions and Azure Kubernetes Service. There are others that are free for the first 12 months of usage. You can check out the full list here (scroll down).

So, there you go, get out there, get started, have fun!

Trinidad and Tobago Azure Users Group

We’re having the first of many (I hope) Microsoft Azure users meeting this Thursday (February 13).

Image result for microsoft azure
How do you Azure?

I’m excited by this because here in Trinidad, I’m grateful that in and around Teleios, we’ve been using Azure for years, and I’ve often wondered about who else around us is learning, playing and building on the platform. Nigel Sammy, Christian Anton and I will be sharing on Azure in general, Azure DevOps and Azure Arc. It’ll be a really nice spread of features, from the novel to the staid.

So, convince you’re boss, if you’re interested, we’ll be at the Microsoft Office on Mucurapo Road, from 9:00 to 11:00 am.

The event is free, so’s the breakfast and you can register here.

Three things about January

Just before I went back out to work in January, I had a fair sense of how I wanted to start the year. At work, I’d be diving in to Planner and refining some early 2020 goals that Anand and I had come up with. At projects, I’d be doing some arduino and bot stuff. All great.

But from January 2nd, I found myself very deep in legacy code from at least a decade ago. And I was working very late. It’s like time stood still. When my team and I raised our heads for a week, a change to the environment around that same code meant even more speelunking.

Out of this last few weeks I saw three things of note:

try
{
//actual code to do something meaningful
}
catch
{
//empty, meaningless catch block
}

  1. Stop using empty catch blocks.
    I haven’t had cause to leave dangly, useless catch blocks lying around for a few years, but I remembered when I used to. And boy was it a shocker. In the age of amazing tracing tools like App Insights, throwing away trace opportunities was like a slap in the face.
    When I showed a few developers at work some examples of empty catch blocks, they understood why it might have happened – I didn’t know what I wanted to do with the exception at the time – but my response was largely, “well, at least log it na”. At least. Even logging took a hit this month.
  2. Log with sense
    The worst kinds of exception message in a log is “An exception occurred”. For the most part, sometimes, when looking for the flow of a problem, I might just put a log statement to show that we got to a place in code. Sometimes, that place is an error handler. The way I see exceptions now, if you’re logging that it occurred, take some time to log what that block was trying to do, as well as what parameters are available. In a messaging system for example, simply a message Id is a big deal. So, first we log, then we log with sense.
  3. Sleep is very good.
    Not just sleep, but a firm commitment to not rush off with the first good idea you have when facing a problem. I have actually heard this stated another way, “Beware the danger of the first light”. While trying to debug our way out of the hole we were in, several ideas came up. Most recently, I had a great one that would have led to massive changes in the system. I was about to announce it, but one of the managers on our team cautioned me. She said it was Friday, sleep on it and see if you feel the same way on Monday.
    Monday came, I felt the same way. Until I spoke to one of the newest engineers on our team and realized we could achieve what I wanted to with a change to one module, as opposed to the whole system. That was good.
    Over the course of this month, there were a lot of challenges.

The TweetWhisperer

Today is GDG DevFest 2019 in Trinidad. The organizers put out a call for sessions, and I was happy to share one of the ideas that had been rolling around in my head for a while.

I Facebook in pirate, don’t @ me.

So, here’s the TL;DR: my idea was to take my likes on @Twitter and funnel them into Google Keep. Along the way, I’ll automatically categorize the tweets and then confirm that categorization via a chatbot. Simple stuff.

So simple, I didn’t even use Visio to diagram it.

What I actually did:

Twitter Likes

I made an Azure Function that would periodically poll my twitter account and get the last tweets that I liked. To do this, I had to create a developer account in twitter to get the appropriate creds. The function was pretty simple:

Categorizing Likes

In the DotNetConf keynote a few weeks ago, I saw an ML.NET demo and I got the idea to use it here, too.

ML.Net to build models (easy peasy)

All my notes

I pulled all my notes in keep to train an ML model. It was very easy, particularly because I used gkeepapi, an unsupported library for interacting with keep.

Doing this made me glad that I could think in terms of a bunch of cooperating functions, because the function to extract the notes from keep was written in python, while most everything else is in C#.

KeepIt: A function to get my notes from Google Keep

The funny thing is, I didn’t really need the model. Most of the things I stored in keep, were in one or two categories – not very good for modelling. I guess I hadn’t really realized that. To be honest, I was probably storing things in keep that I had a very high priority on, which turned out to be mostly cloud things. Go figure.

How the bot will help change things

So, I’m grabbing my tweets, categorizing them based on history and preference and I’m ready to store them, except, as I’ve shown above, my categorization is whack. Thus, I also made a chatbot, that will take my liked tweets and ask me to adjust the category I’ve labelled it as.

TweetWhisperer: Helping me categorize my tweets better.

So, with these three components, a likes-harvester, a categorizer and a chatbot, maybe, I’ll get better at returning to these topics that I have an interest in.

An unexpected journey

LOL.

My family was going to the beach a few weekends ago, and so I decided to try and catch some miles on the way there. Literally, I’d jump out of the car just before we got there and jog the rest of the way.

We were going to Las Cuevas beach, which for some reason I thought was a short distance from Maracas beach. It’s not. It’s really not.

I mean, I try and do a long run on the weekend, so an extra mile on my usual 6 shouldn’t have been too arduous. However, Maracas Bay Village is the most hilly place I’ve ever run!

So, four miles in I was exhausted, but thankfully, I had my buds and my podcasts were on fire. Recently, I was interviewed on Tim Bourguignon’s Software Developer’s Journey podcast, so I subscribed to it and it turns out to be just what you need when you’re on a long run with no end in sight. Tim uses interviews to tease out compelling, interesting developer journeys. Which at times can feel just like my run felt. It was so good to have that distraction.

I was able to finish two episodes, one featuring Stephanie Hurlburt, which if I had to rename would be, The Importance of Balance. And one featuring Guillermo Rauch.

Just when I would have pulled a Geoffrey and jumped in a car to get the rest of way, I saw an old man who said Las Cuevas was one ridge over and it was!