Jakub WłodarczykSpring Expression Language (SpEL)Spring Expression Language is an expression language which supports manipulating and querying object graph at runtime. The object graph is…Nov 27, 20221Nov 27, 20221
Jakub WłodarczykAdding 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…Nov 20, 2022Nov 20, 2022
Jakub WłodarczykWrite fail-safe and concise code with the ?. and ?? operatorsWhile having a deeply nested object it’s common to encounter the dreadfulNov 6, 2022Nov 6, 2022
Jakub WłodarczykMost 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…Jul 4, 2020Jul 4, 2020
Jakub WłodarczykApplying 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…Feb 11, 2019Feb 11, 2019
Jakub WłodarczykMentoring and leading less experienced developers + success story from zero to employmentSituation on the market for (in)experienced devsJul 7, 2018Jul 7, 2018
Jakub WłodarczykTutorial: 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.Jun 23, 2018Jun 23, 2018
Jakub WłodarczykHandling 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…Jun 16, 201812Jun 16, 201812
Jakub WłodarczykTesting 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…Jun 2, 20182Jun 2, 20182
Jakub WłodarczykValidating 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…Jun 1, 20181Jun 1, 20181