What is a tuple

A tuple is a immutable heterogenous data structure while Lists are homogenous sequences. Tuples have structure. Lists have order.

For example say we wanted to save notes in a book on a specific page an line number. We could define that data structure as a tuple.

my_location = (42, 11)   # page number, line number

And then use this as a key in a Dictionary to store notes on locations. A List on the other hand could be used to store multiple locations. Naturally one might want to add and remove from the list. That’s why Lists are mutable and tuples are immutable.

https://stackoverflow.com/questions/626759/whats-the-difference-between-lists-and-tuples

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How to soft ambient hue adobe illustrator

I got this nice ambient transparent hue on an image by doing the following:

White rounded corner square

Transparency 80% (Window / Transparency)

Slide and apply over image. They select the ‘Hue’ option from the Transparent dialog.

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How to enable Windows Authentication Rider

Right click on project.

 

How to Launching Multiple Projects in JetBrains Rider

Create a project for every IIS project you have in your project.
Configure one of them with a start page.
Add them all to a ‘Compound’ project.

Hit run and watch them go

Your multiple projects in a ‘Compound’ project

One of the project configured with a start page

Links that help
https://codeopinion.com/launching-multiple-projects-in-jetbrains-rider/

A nice way to combine presence and state in C#

Sometime you want to check that something is there, and that when it is, it also has a specific value.

This is a nice way to do it

public bool RequireUserConfirmation =>
            GasDayInPastData != null &&
            !GasDayInPastData.UserConfirmed;

The C# yield

I don’t use yields often, but one place where they can be handy is when you want to return a collection of objects Just-In-Time.

One way to do this would be with a list (rather clumsy).

        public static IEnumerable<GasDay> GetEnumerator(GasDay inclusiveStart, GasDay inclusiveEnd)
        {
            List<GasDay> gasDays = new List<GasDay>();
            for (GasDay gasDay = inclusiveStart; gasDay.IsBeforeOrSame(inclusiveEnd); gasDay = gasDay.NextGasDay())
            {
                gasDays.Add(gasDay);
            }
        }

A more elegant way would be o use a yield.

        public static IEnumerable<GasDay> GetEnumerator(GasDay inclusiveStart, GasDay inclusiveEnd)
        {
            for (GasDay gasDay = inclusiveStart; gasDay.IsBeforeOrSame(inclusiveEnd); gasDay = gasDay.NextGasDay())
            {
                yield return gasDay;
            }
        }