To reference framework assemblies and a number of other commonly used assemblies, you can use the #r AssemblyName directive.
For instance, a Newtonsoft.Json library that we have used in the ScoreTweet function is one of the common libraries that can be referenced with an #r directive. If we were to deploy ScoreTweet as a C# script-based function, we would need to add the following line before the function code:
#r "Newtonsoft.Json"
The full function code using the #r directive will be provided in the Sharing code between functions section later in this chapter.
When using a privately developed assembly, you may add the assembly to your function's bin directory, and then reference it by using the full file name, ...