Kotlin 1.3 is bringing a new experimental feature to the compiler to help with improving program correctness via the type-system: contracts.

Contracts are a tool that allow library code (both standard library and your libraries) hint to the compiler about the constraints that are ensured on types based on the use of functions in your program. Let’s see how this can be used in practice.

Hugo makes it quite simple to share code snippets with syntax highlighting on your site, but did you know you can highlight individual lines in code-snippets as well?

Recently I wrote an article about de-structuring in TypeScript, and hinted that Kotlin has a similar feature, but in more of a “strongly typed” language style.

A fairly recent addition to Typescript is index types and the keyof operator.

ECMAScript is all about wrangling loosely typed variables.