technology elasticsearch
Elasticsearch Mappings: Examples on how to Create, Edit, Remove
16 Feb 2016
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Fully Customized Json Validators for the Play 2 Framework: Explanation and Example
05 Jan 2016 Play 2 Allows a lot of flexibility for defining custom rules for JSON validation but if you want full control over how JSON is validated against a case class (including conditions that depend on more than one attribute and custom error messages) you need to write custom readers for your classes.
technology consistency usability robustness ux best practices ui
Usability Best Practices for the Busy Programmer: Two Principles to Keep in Mind
30 Dec 2015 Here I'll explain two things you (in the very least) need to take into account in order to have systems you create be efficiently used by your end users.
Java 8 Timezones: Examples in Scala
23 Dec 2015 Many Scala examples of the new Java 8 java.time API, focusing on ways to deal with and encode Timezone information in your objects.
Pandas DataFrame by Example
15 Dec 2015 Lots of examples of ways to use one of the most versatile data structures in the whole Python data analysis stack. Learn how to slice and dice, select and perform commonly used operations on DataFrames.
One-Hot Encoding a Feature on a Pandas Dataframe: Examples
27 Nov 2015 One-hot encoding is a simple way to transform categorical features into vectors that are easy to deal with. Learn how to do this on a Pandas DataFrame.
technology aws emr spark zeppelin
Add an Apache Zeppelin UI to your Spark cluster on AWS EMR
10 Nov 2015
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Creating a Spark Cluster on AWS EMR: a Tutorial
10 Nov 2015 AWS now provides full support for Spark Clusters within Elastic MapReduce (EMR). It's very simples and you just need a couple of minutes to learn how to do it.