My Chocolate Cake recipe

By LiBePosted on Friday 30 November 2018Cat Cuisine, ProgrammesLeave a comment

Here is a chocolate cake recipe. Please note that this is not only a recipe, but it is code too... You can compile that in Kotlin successfully and you can imagine a cookbook site using this kind of implementation. fun main(args: Array<String>) { val chocolateCake = `recipe consisting of` { - (7 `ounces of` "black… Read More »

kotlin live

By LiBePosted on Friday 30 November 2018Cat G33k, ProgrammesLeave a comment

If you are among these ones : You want to practice some code but you don't want to open an IDE You are presenting some slides and you don't want to switch between the deck and the editor You are just beginning to write some code and you don't want to install the big SDK… Read More »

Write an unit test without mocking the rest template

By LiBePosted on Wednesday 31 October 2018Wednesday 31 October 2018Cat G33k, ProgrammesLeave a comment

How would you call a JUnit test that calls an external service ? -> An integration test, why not... How about a JUnit test that replaces the implementation of the repository layer by a mock ? -> An unit test, fine. Would you appreciate to write an unit test that simulates the integration without the… Read More »

JAXB unmarshalling ? Sax reader ? What about… nothing.

By LiBePosted on Friday 31 August 2018Cat G33k, ProgrammesLeave a comment

Here is a very tiny and naive xml parser made in kotlin. One function, one input (string), one output (map). Simple, and lightweight (no library). /]+)[^>]*>") val OPENING_CLOSING_TAG = Regex("^< ([^ >/]+)[^>]*/>") val CLOSING_TAG = Regex("^]+)>") val ATTRS = Regex("([a-zA-Z][a-zA-Z-0-9]*)=\"([^\"]*)\"") val root = mutableMapOf() val deque = ArrayDeque(listOf(root)) val attrSetFunc = {text: String, node: MutableMap… Read More »

Honey, I shrunk the React app

By LiBePosted on Tuesday 31 July 2018Tuesday 31 July 2018Cat G33k, ProgrammesLeave a comment

Size does matter sometimes. Here is the most obvious reason why : a site that takes too long to load ends up with an error on a device. Or worse, your visitor may become impatient and go to your competitor. Problem is when you are building your application and you see a webpack log like… Read More »

Kotlin js : hack to get the values of an unknown enum

By LiBePosted on Friday 29 June 2018Friday 29 June 2018Cat G33k, ProgrammesLeave a comment

Kotlin js is really experimental and does not allow a lot of things when it comes to reflect apis : actually you can only read the class name or cast the value into a dynamic (javascript-like) object. Ever wondered how to do call myEnum.values() in js without knowing the type ? Not permitted so far,… Read More »

A PWA that sounds more App than Web

By LiBePosted on Thursday 31 May 2018Thursday 31 May 2018Cat G33k, ProgrammesLeave a comment

A Progressive Web App is a set of rules that comply with the display of a WebApp in a standalone or minimalist view. Pick up your web application, remove the bar address and the menu (optionally), and try to figure out how the user can interact with your application as if the client was not… Read More »

spring-boot : differences in my yaml files

By LiBePosted on Monday 30 April 2018Monday 30 April 2018Cat G33k, ProgrammesLeave a comment

During the release process, there is a tricky part that can sometimes ask for production hot fixes : "Are you sure that all the yaml configuration files are even between the various environments ?" What are we talking about ? Discrepancies between configuration files in each environment. That happens more often than you think, and… Read More »

Properties to JsonNode

By LiBePosted on Saturday 31 March 2018Wednesday 4 April 2018Cat G33k, ProgrammesLeave a comment

How difficult do you find it to convert properties into a json object ? It would require a lot of boilerplate work in java, but it is easier in kotlin. This snippet reads a Map of properties paths and values and converts them into a json node (or a map of maps (of maps...) of… Read More »

aws lambda in pictures

By LiBePosted on Wednesday 28 February 2018Wednesday 28 February 2018Cat G33k, ProgrammesLeave a comment

A lambda function is a cost saver. You can save - some virtual machines (they are managed by the IaaS itself) - some setup (the API interface is the code itself) - some maintenance cost (the function will live forever and you control the downtime if you need some) Do you want to build an… Read More »