Crunchskills

Rust

How to slice an array in Rust

Slicing arrays is very simple using the slice primitive

javascript

How to loop over a object in javascript

Since the introduction of ES6 we can quickly loop over every key/value pair inside a JavaScript object.

javascript

Time Complexity & JavaScript

What is time complexity?When creating a computer program, it is important to consider the amount of time taken up by the algorithms you write in order to save computing

Deno

Deno vs Node - just the differences.

Whats different between Deno and Node?Both Node and Deno were designed by the same person - Ryan Dahl. Ryan created node in 2009, a long time ago, before several

SQL

How to use SQL CTE's - almost like variables in SQL

CTEs allow us to create temporary tables in SQL. And use them as sort of variables in other queries. Turns out this is one of the most important patterns to make your life easier when doing complicated queries. SyntaxWITH name_of_cte ( column1, column2,

Common Interview Question: Implement Autocomplete

What do we do to get constant time lookup into any data? No free lunches in computer science i'm afraid. We have to sacrifice something, in case of Tries we

Deno

Deno HTTP Web Server example (Like Express)

Many moving to Deno will be surprised to find they can't simply bootstrap an express web server in Deno. But, Deno offers a similar (and much improved) web server that

Deno

Deno web server + API Tutorial

Tutorial how to setup a quick API with Deno, with a SQLite database

Algorithms

Determine if a number is a palindrome - Technical Interview Question

The prompt:Given a number, write a function that can determine if the specified number is a palindrome. For example 134 is not a palindrome because reversing it results in

google

The most important data structure for tech interviews.

They come up in most if not all coding interviews, because they are essential to any performant software. You might know them by other higher level siblings names like dictionaries, maps or vectors.