Three steps to bring guarded statements to JavaScript for safer, better code, and forgo common usage of “else” statements. — Edsger W. Dijkstra, a Turing Award winner and ACM Fellow, the inventor of the “structured programming” phrase, and one of the first drivers of Computer Programming becoming a scientific discipline, made many contributions to the theory of programming. In this article we’ll be going back to a very old idea…

Revisiting the Babylonian method for square roots: why and how does it work? — In my A totally new, very old method for finding square roots article, I described how I discovered an algorithm that actually happened to be very old and well-known: the “Babylonian method.” (See References, at the bottom for more on that topic.) …

A new iterative method to approximate square roots — actually shown to be centuries old! — Isaac Asimov once wrote [1] that all his discoveries in Math were either “completely correct findings that are quite old [or] completely new findings that are quite wrong.” …

Safely evaluate expressions in JavaScript in a simple yet powerful way, by using a Parsing Expression Grammar Recently, in a front-end project I was working on, the client needed to be able to define calculations by entering formulas using numbers, variables, and functions. …

Adding types to some functional programming constructs may not be simple, and this article will show you different ways of providing data typing for currying higher-order functions. In the previous article we saw how to work out a TypeScript version of our partial application code. This proved to be feasible…

Declarative methods such as map(), filter(), and reduce() have clarity advantages, but in some cases may incur in performance costs. This article will show you how to use transducers to fully optimize any sequence of operations, with no loss of clarity. Session Replay for Developers Uncover frustrations, understand bugs and fix slowdowns like never…

Suppose you have a function that produces results based on random numbers. How can you go about writing unit tests for it? And, even more importantly, how can you be sure that your function’s random behavior produces the right results? …

All solutions to the anniversary challenge riddles — Globant just became 20 years old and created a Riddles Challenge for all Globers, with exciting prizes for winners! The contest is now over, so let’s see the riddles and their solutions. First Riddle The first problem required finding arithmetic expressions to produce some specific results. Only using the ordered digits of…

This article will show you several important Computer Science algorithms, such as sampling, shuffling, and sorting, using a simple deck of cards for the examples, so you can focus on the needed logic and study how to apply them to your own work. In our previous article we developed code…