Golang

Introduction Hello everyone! 👋 In this article I’ll present you the options pattern in Golang. The pattern is useful when you want to create a function that takes different parameters as an option. Code Study: Building a rocket The following code defines a Rocket struct with 3 fields and a NewRocket function which builds an instance of the Rocket. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 // Rocket models a rocket. type Rocket struct { name string nose Nose fuelCapacity int } // NewRocket returns a new rocket instance. func NewRocket(name string, nose Nose, fuelCapacity int) Rocket { return Rocket{ name: name, nose: nose, fuelCapacity: fuelCapacity, } } To use the NewRocket function one would have to write something like this: ...

Introduction A hash set is a data structure that allows storing elements inside a set using a hash function. The set is a data structure that offers efficient access to its elements and does not allow duplicates. The uniqueness of an element in the hash set is determined by the hash function, in this implementation hash collisions are not handled. If the hash of “a” is 123 and the hash of “b” is 123 as well then we consider “a” and “b” to have a hash collision and if “a” is already present in the set adding “b” has no effect. ...

Hello, TLDR; 1 2 3 brew install librdkafka openssl@3 pkg-config export PKG_CONFIG_PATH="/opt/homebrew/opt/openssl@3/lib/pkgconfig" go test -tags dynamic ./... I’ve been transition from a Linux machine to a MacOS M1 machine at work and when I ran tests for a Golang project, I noticed that the test failed on modules depending on librdkafka. Initially I’ve had problems with Kafka on MacOS M1 on Docker, since I was using an older image version that didn’t have any arm64 build, updating to images to version 7.2.1[1] fixed the issues. ...