Jakub Włodarczyk·Nov 27, 2022Spring Expression Language (SpEL)Spring Expression Language is an expression language which supports manipulating and querying object graph at runtime. The object graph is…A response icon1A response icon1
Jakub Włodarczyk·Nov 20, 2022Adding properties with the @PropertySource annotationProperty source is a place where you keep your configuration properties. Technically, it’s an abstract class that represents a source of…
Jakub Włodarczyk·Nov 6, 2022Write fail-safe and concise code with the ?. and ?? operatorsWhile having a deeply nested object it’s common to encounter the dreadful
Jakub Włodarczyk·Jul 4, 2020Most useful methods from Moment.jsI’ve been recently using a lot of moment.js in my everyday work. It helps with date manipulation and is probably the most popular solution…
Jakub Włodarczyk·Feb 11, 2019Applying for Senior and near-senior Front-end roles — advice for preparation and thoughtsNeed a freelancer (or consultations / help) for a project or want to build a showcase project? Hire me. Expertise: JS, React.js, Redux…
Jakub Włodarczyk·Jul 7, 2018Mentoring and leading less experienced developers + success story from zero to employmentSituation on the market for (in)experienced devs
Jakub Włodarczyk·Jun 23, 2018Tutorial: practical application of Array.prototype.find & Array.prototype.findIndexHere is an explanation with some examples of quite useful ES6 methods that can save you lots of headaches and reduce the amount of code.
Jakub Włodarczyk·Jun 16, 2018Handling multiple checkboxes in React.jsI’ll show you an example implementation of how you can handle multiple checkboxes in React.js. Let’s create some config file for the…A response icon12A response icon12
Jakub Włodarczyk·Jun 2, 2018Testing Redux-SagaThis entry will cover some basics of testing Redux-Saga. Such tests are not an easy thing at the beginning but after writing some of them…A response icon2A response icon2
Jakub Włodarczyk·Jun 1, 2018Validating dependencies in the project with npm-check and depcheckOften when we start a new project we use the scaffold from our other projects or external resources. It has benefits — we know that the…A response icon1A response icon1
