This package provides generic KeyValue pair, along with couple of useful methods. It is dead simple as code and have 100% code coverage.

In my personal project I came across a situation, where I had 2 modules, which I didn't want to depend on each other. In module A I used "dependency injection", which I implemented as an interface that module B should (implicitly) fulfil. The methods of the interface returned list of key-value pairs. In that case using ad-hoc string {key string; value string} in both places couldn't work, becayse they are seen by the compiler as different types. Thus, in order not to introduce dependancy between them, I needed both the interface in module A and the implementation in module B to depend on the same struct defined somewhere in third module. It seemed excessive to me to introduce a third module only for such a generic thing in this specific project, so coming from the C# world, I decided to create a separate package that basically copies the functionality of C#'s KeyValuePair type.

kvp := pair.KeyValue[string, string]{Key: "key", Value: "value"}

and then simply

kvp.Key will give you "key" and kvp.Value will give you "value", as one might expect

Following C# lead, there is Deconstruct method:

key, value := kvp.Deconstruct()

kvp.String() will give you {key value}

Written by Victor Tashkov vtashkov@gmail.com Published with MIT License.