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Starting the prototype: building the database

This week, I started working on a prototype of the UI for my event scheduler software to test if it makes sense on a tablet and on a desktop. Since this is a prototype, I’m not putting any effort in the architecture, error handling or on tricky edge cases and business logic for now. What I’m testing out exactly is ...

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How long did I sleep last night: using Cordova, HealthKit, and JavaScript, and a handful of Promises

Now that we can know how much activity I did yesterday, we can look at whether I am getting enough sleep. A quick look at the Apple documentation lets us see that HKCategoryTypeIdentifierSleepAnalysis is the right measure to be using. This is a subtype of SampleType so we can use the querySampleType function. First of all here is the same boilerplate code, with ...

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Introduction to the Backbone Query API

As a relatively “new” user of Backbone.js, I looked at different JSON querying tools that existed. At the time I was still struggling with using JSON as the data source and wrapping my head around the process for querying the data set that was contained in a large string. Coming from a Java and strong PL/SQL background in Oracle, I ...

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HTML5 Offline Web Application Example

In this example we will talk about writing an Offline Web Application. Offline ? Sounds weird, doesn’t it ? HTML5 allows us to create a “list” of files accessible after the browser is disconnected. The browser will always have to download the main HTML file and all the files in this “list” at least once. Let’s see how this works. ...

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Python Tutorial: Strings Datatype

Data stored in memory can of different types and Python like other languages have different standard data types. Sometime back we did a post on Python Numbers. Today we will be covering other standard datatypes i.e. Strings. Note: All examples shown in the post are based on python3. Like other languages, python also has the same meaning/definition for Strings. They are ...

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HTML5 Graphics and Animation Example

Introduction Animation is the visualization of change, having reference points for the start and end states for comparison. Before HTML 5, it was limited to usage of Adobe Flash, CSS and JavaScript mostly. In this tutorial we will introduce the HTML canvas element and the requestAnimationFrame function in JavaScript to help us create simple animations. The HTML canvas element (introduced ...

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Real-time Communication in AngularJS with ($Q)orlate

This post introduces the lightweight ($Q)orlate library. A popular type of engagement that iVision is hired for is the architecture assessment. For assessment projects we analyze the existing system, weigh our own experience, industry standards and best practices against what we find, then provide feedback and a potential road map to iterate towards a desired solution. I’ve participated in everything ...

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Python: Find the highest value in a group

In my continued playing around with a How I met your mother data set I needed to find out the last episode that happened in a season so that I could use it in a chart I wanted to plot. I had this CSV file containing each of the episodes:             I started out by ...

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