Corey Articles

All articles tagged with Corey.

Fixing the “unrecognized selector sent to instance” exception

Here’s a simple fix for the unrecognized selector exception. Once you understand selectors, it’s straightforward. I’ll walk you through it.

If you have an app that has slight variations, but is mostly the same, you could use a combination of multiple schemes and compilation conditions.

Here’s an easy to follow code example of how to use Elixir guards

Here’s an easy to follow code example on Elixir pattern matching

Seeing the ampersand for the first time in Elixir was really confusing, but here’s some examples to clarify how it works.

I tried everything and no one knew the answer, but finally figured out why my Expo app was stuck on the Splash Screen

It can be a little confusing when you see you aren’t able to add a not null constraint to an existing table. Here’s one solution to get around that.

Saying no can be straightforward for some and not so much for others

Debugging HTTP requests are easier if you use an HTTP Proxy. I go over what it is and what the options are.

SAML SSO is a complex technology, but it doesn’t have to be hard to understand. I distill SAML into simple terms.