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The past few weeks were dedicated to the useful array methods. However these methods have been implemented in ECMAScript 5 and are therefore not available in older browsers such as IE8 and sometimes we have to support legacy browsers. In JavaScript, we use polyfills to create behavior that is not implemented in browser. We can […]

A lot of new annotations have been introduced since the JEE6 spec. Before we had EJBs and servlets to cover most of our server-side objects in a JEE application. But in JEE6, CDI and JAX-RS have been added, along with a few other JSRs that are implemented using annotations. This results in a long list of annotations, where – in my opinion – it is not […]

The past weeks we dived in the wonderful world of array methods. Previously we already discussed forEach, filter, some and every, and map. Today we’ll take a look at the reduce method. While being extremely useful, its concept can be hard to grasp. Also known as fold (in this case foldLeft) in other functional programming […]

With the launch of DB 12c in 2013, Oracle introduced a new architectural concept, called “multitenant databases”, where you have one super database (=container; CDB) and one or more sub databases (= pluggable DBs; PDB). Before running the installer on an Oracle Linux 6 environment, a library can be installed through yum to meet all […]

In the previous blogpost we discussed the map method on arrays in JavaScript. We still have some useful methods the go. Next in line are the some and every methods. These methods are similar and can be very useful when validating data. The every method will check if for every element in the list, the […]

Last week we took a look at the filter functionality. This week I will show you one of my favourite array methods called: “map”. It’s extremely powerful and useful in so many ways. The purpose of map is simple, it transforms an item in an array and pushes that transformation into a new array. The […]