[−][src]Module show_notes::e021

Keeping your types under cover

Date: July 17, 2017
Subject: Using type aliases and creating custom type wrappers for more expressive and safer code.
Audio

Links and Notes

EmailStruct	A "newtype" built by wrapping a `String` in a tuple struct.
ThingToDestructure	A simple thing to demonstrate destructuring

A "newtype" built by wrapping a String in a single-variant enum.

send	A simple function showing you can use a `String` where an `Email` is required.
takes_a_str	A function which takes a string, to use with `Deref` and `EmailStruct`.

A type alias for a string that is appropriate to use as an email address.