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I’m an independent IT consultant and entrepreneur in the Internet and software business. I’m interested in design, enterprise applications, web apps and SaaS products. I design and develop business solutions and applications. I help companies in terms of software quality and knowledge transfer, e.g. with Angular and Spring Boot.

Dinero.js: Working With Monetary Values in JavaScript

Working with monetary values can become a problem in any programming language and JavaScript certainly is no different in that respect. The naïve assumption that monetary values can be expressed as floating point numbers almost inevitably leads to rounding errors caused by precision and the fact that in most cases monetary values are represented as decimal numbers with just two (instead of an undefined number of) decimal places. Apart from that, money is not just a number but usually comprises a currency ... Read more

Blogumentation

I'm not sure if he actually came up with the term 'blogumentation' but software quality engineer Jamie Tanna features quite prominently when searching for it so at the very least he appears to be one of its more avid and deliberate users. Anyway, while the term 'blogumentation' might be somewhat obscure the concept behind this particular portmanteau is a seminal one. Basically, it derives from the insight that often the best way to learn and internalise knowledge is to talk, write and ... Read more

Using Swagger to Generate Client SDKs for REST APIs

These days Swagger is a popular, easy-to-use tool for (semi-)automatically documenting REST APIs on-the-fly. For example, in order to document a REST API created with Spring Boot and Jersey literally all you have to do is add these two entries to your Maven pom.xml: [xml] <dependency> <groupid>io.springfox</groupid> <artifactid>springfox-swagger2</artifactid> <version>2.6.1</version> </dependency> <dependency> <groupid>io.springfox</groupid> <artifactid>springfox-swagger-ui</artifactid> <version>2.6.1</version> </dependency> [/xml] You'll then get a ready-made documentation for all your REST API endpoints. An example of how this looks like can be seen here. While this already is very useful in that it helps with properly documenting your software, especially ... Read more

Documentation and Spreadsheets with an API: GitBook and Fieldbook

Continuing on last week's post about RunKit - a Node.js prototyping environment for the browser - here are two interesting tools that make use of RunKit: GitBook is a collaborative documentation tool that allows you to create beautiful, version-controlled documentation for your software. It's used by software components like Redux and it leverages RunKit to embed live, reactive code examples in your documentation. Fieldbook is a database creation tool thats touted as "A database with an API – as simple as a spreadsheet". ... Read more
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