I have been working on my SPF project in Swift of late. As part of this I have started to deal with substrings. “A slice of a string” according to Apple Documentation. In dealing with this, I have found myself quite often converting substrings back to normal strings. Today we will look at how we can pass substrings directly by making our functions generic.

Today, I will start on building out the functionality of the struct Mechanism.
This will involve creating some tests, and basic functions.

Recently, as I work my way through learning bits of rust, I have been thinking that I should in corporate some form of input validation for domains.

Today I will look at two crates.

What is SPF

If you have not followed my rust series on deconstructing SPF you can check it out here.

In my previous series “Learning Rust”. I decided to attempt to learn some fairly basic rust concepts and constructs by working on a fairly simple project. This seemed to go fairly well. So I am now going to attempt to work on the same project, but this time, using Swift.

In the previous article in this series I went through some basics of documenting your rust code. I had hoped to be able to take advantage of another nice feature of rust. That being the fact that code examples are actually tested by rust. I will go through the changes I had to make for this to work.

Hi.
As with all projects. It’s important to create documentation. This is, as we know, very important when creating code. When we come back to a project after a break, or if someone new takes over. Documentation will help you remember or learn what the code does. The thinking that was behind certain decisions.

This is a quick followup on my progress in deconstructing SPF using Rust.
Today I was able to implement both A and MX mechanisms.

Hi. In my previous article Looking at Regex in Rust. I covered some basics. Today I will go over some new things that I have learned, as I expanded on things that my regex expression needs to handle. In particular the need to handle the possible existence or none existence of qualifiers +,-,~,?.

If you have been following this series, you might know that I am playing with SPF records. I have turned my eye to a and mx mechanisms. As I started looking at the a mechanism. I noticed that my current approach using the standard string functions would probably be fairly difficult to implement. So I started to think about using the Regex crate. So this will be a look at how that went. The challenges and the things that I took away from the experience.