Interface Pollution in Golang
Interfaces are one of the cornerstones of the Go language when designing and structuring our code. However, like many tools or concepts, abusing them is generally not a good idea. Interface pollution is about overwhelming our code with unnecessary abstractions, making it harder to understand. So, first we understand the concept of interface and then…
Bibek PokhrelNot being aware of the possible problem of type embedding
Concept of embedded field A struct field without a name is known as embedded field. For example :- In the Employee struct, the Address type is declared without an associated name; hence, it’s an embedded field. But this can sometimes lead to unexpected behaviors if we don’t understand all the implications of type embedding. Note…
Avinaya AcharyaBeing confused about when to use generics
Introduction The Go 1.18 release introduced a new feature called generic types (commonly known by the shorter term, generics). This allows writing code with types that can be specified later and instantiated when needed. However, it can be confusing about when to use generics and when not to. In this blog, I will try to describe the concept…
BABULAL TAMANGReturning Interfaces
While designing a function signature, we may have to return either an interface or a concrete implementation. Let’s understand why returning an interface is, in many cases, considered a bad practice in Go. We know that interfaces live, in general, on the consumer side. Let us consider, there is producer package, we define an producerstore…
Optional Function Parameter Pattern
Go doesn’t support optional function parameters. However, the need for optional parameters will always exist. There are many ways to provide optional parameters to a function in Go, but the most graceful way is to use functional options. Do in this blog we will go through a concrete example and covers different ways to handle…
Project misorganization
Project organization is one of the most common mistake made by Go Developer. Go provides a lots of freedom for designing the packages and modules hence it is not easy task to organize the project. is The purpose of organizing the project are maintainability, readability, consistency and so on.
Any says nothing
The interface type that specifies zero methods is known as the empty interface: interface{} An empty interface may hold values of any type. (Every type implements at least zero methods.) Empty interfaces are used by code that handles values of unknown type. With Go 1.18 the predeclared type any became an alias for an empty…
Bishow ShresthaCreating utility packages
This blog is about how it is a bad practice to create shared packages such as utils, common and base. We will learn about the problems with such approach and how we can improve our code and project structure by avoiding such an approach. Let’s look at an example inspired by the official Go blog….
Creating confusion with octal literals
Octal is a number system with base 8, it has 8 values (0, 1, 2, 3, 4, 5, 6, and, 7). In Go programming language, an octal literal can be written with the prefix 0 (Zero). The value which is prefixed with 0 is considered as an octal value and it can be used in the program statements like…
Neglecting integer overflow
Concepts Integer is a basic data types. Golang supports integer data types extensively. Integer are divided into two types which are signed and unsigned integer. Now we will see it’s types Signed integer in go Types Range Types Range int8 -128 to 127 int16 -32768 to 32767 int32 -2147483648 to 2147483647 int64 -9223372036854775808 to 9223372036854775807 Types…