Crate typers

Typers

This crate provides some primitives to perform type level programming. At the moment it only provides booleans, usigned numbers and list at the type level.

Quick intro to type level programming.

How to construct a type from another?

To construct a type from another we use GATs (Generic Associated Types). An associated type can be seen as a function taking the type Self as its first argument and returns a type. If the associated type has generics they can be considered as additional arguments. To perform operation with those types you might add trait bounds get access to other type functions. Trait bounds are the types of types. Sometimes you may need to use the <T as Trait> syntax to use the assciated types of the Trait

The principal way to compute complex types is to use recursion. The list and num modules make use of it extensively.

Modules

• bool
  Type level Boolean.
• list
• num
  Numeric module.

Macros

• Tlist
  A macro to define simple TList types.
• tlist
  A macro to define TList values.
• uint
  A macro to define simle Unsigned types with just the bits.

Structs

• Invalid
  Invalid represent the result of any operation that can’t be performed on a type.(e.g. Decrementing the Representation of 0 in usigned numbers)