From Kotlin in Action by Dmitry Jemerov and Svetlana Isakova
The key idea of this article is the concept of higher-order functions. A higher-order function is a function that takes another function as an argument or returns one.
By Debasish Ghosh
This article is taken from the book DSLs in Action. The author discusses integration in which the involved languages interoperate within the constraints of the underlying virtual machine. In particular, the author focuses on homogenous integration patterns, while briefly covering heterogeneous integration patterns with external DSLs.