Practical guides for developers. Ideas for building and running software.
Go 1.21 added the generic slices and maps packages to the standard library. Before that, the same utility functions lived in golang.org/x/exp, the experimental module where the Go team previews…
When you write m := make(map[string]int) in Go, the runtime creates a hash table, not a simple list of pairs.…
Go added generics in version 1.18. The mechanism is the type parameter: a placeholder type that a function declares in…
structuredClone is a built-in JavaScript function that makes a deep copy of a value. A deep copy duplicates the value…
You run microservices that call each other over a network, and those calls fail. A connection drops, a downstream service…
Webhook providers such as Stripe and GitHub deliver events on an at-least-once basis: they retry a delivery until your endpoint…
When you have an object literal and a type you want it to match, TypeScript gives you three ways to…
Most startups begin with one application that contains every feature and deploys as a single unit. That application is a…
If you are building an AI agent that reads from or writes to your systems, the most important decision is…
When you manage infrastructure with Terraform across development, staging, and production, you need to decide where each piece of configuration…
Rust's ownership rules decide who can use a value and when. Every value has exactly one owner, a variable or…
An AI product that calls a large language model spends real money on every request. Each call consumes tokens, the…
Go 1.21 added two generic helper packages to the standard library: slices and maps. Before that, these utilities lived in…
When you write Go code that checks whether a value exists, fetches a value by key, or removes duplicates from…
Terraform modules are reusable packages of infrastructure configuration. A module is a folder of .tf files that declares resources such…
