Type-driven Development with Idris

Types are often seen as a tool for checking errors, with the

programmer writing a complete program first and using the type

checker to detect errors. And while tests are used to show presence of

errors, they can only find errors that you explicitly test for. In typedriven

development, types become your tools for constructing

programs and, used appropriately, can show the absence of errors. And

you can express precise relationships between data, your assumptions

are explicit and checkable, and you can precisely state and verify

properties. Type-driven development lets users write extensible code,

create simple specifications very early in development, and easily

create mock implementation for testing.

teaches programmers how to improve the performance and accuracy of

programs by taking a