Kim Fom kimfom01

Since Chrome apps are now being deprecated. Download postman from https://dl.pstmn.io/download/latest/linux

Although I highly recommend using a snap

sudo snap install postman

Installing Postman

tar -xzf Postman-linux-x64-5.3.2.tar.gz

BNF parsing

Toy weekend project: make a parser-parser!

This takes in a grammar given in Bakus-Naur Form (BNF), and a program that was written in the provided grammar, and produces an image of Syntax Tree using graphviz.

References:

	root = true

	# C# files
	[*.cs]

	#### Core EditorConfig Options ####

	# Indentation and spacing
	indent_size = 4
	indent_style = space

	//program.cs

	var app = builder.Build();
	var scope = app.Services.CreateScope();
	await DataHelper.ManageDataAsync(scope.ServiceProvider);

	public static class ConnectionHelper
	{
	public static string GetConnectionString(IConfiguration configuration)
	{
	var connectionString = configuration.GetConnectionString("DefaultConnection");
	var databaseUrl = Environment.GetEnvironmentVariable("DATABASE_URL");
	return string.IsNullOrEmpty(databaseUrl) ? connectionString : BuildConnectionString(databaseUrl);
	}

	//build the connection string from the environment. i.e. Heroku

	public static class DataHelper
	{

	public static async Task ManageDataAsync(IServiceProvider svcProvider)
	{
	//Service: An instance of db context
	var dbContextSvc = svcProvider.GetRequiredService<ApplicationDbContext>();

	//Migration: This is the programmatic equivalent to Update-Database
	await dbContextSvc.Database.MigrateAsync();