F# scripts with NuGet packages

F# 5.1 finally brings joy of using NuGet packages without much hassle.

This is how you can use Npgsql library to create a new  PostgreSQL database.

#r "nuget: Npgsql"

open Npgsql

let connString =
    "User ID=postgres;Password=Password1!;Host=localhost;Port=5432;Database=postgres;Pooling=true;"
let conn = new NpgsqlConnection(connString)
conn.Open()
let sql = """
CREATE DATABASE "Foobar"
    WITH 
    OWNER = postgres
    ENCODING = 'UTF8'
    CONNECTION LIMIT = -1;
"""
let cmd = new NpgsqlCommand(sql, conn)
cmd.ExecuteScalar()

printfn "Database created!"

You run the .fsx script with `--langversion:preview flag

dotnet fsi --langversion:preview .\create-database.fsx

NuGet.org already generates configuration ready to use in F# scripts. Just switch to F# Interactive tab.