English - Basics/Modules

[TrueBoxGuy]

Write a lesson succeeding the expressions and functions (#22) lessons that does the following:

• Defines modules as a specific level of organisation (i.e. a library / executable contains a group of modules which each contain a group of related top level declarations)
• Specifies the structure of a module and their order: language extensions; module name and exports; imports; top level declarations
• Explains the usage of imports:
  • Explains that imports are used to import top level declarations from other modules
  • Describes basic import syntax (raw imports and qualified as imports)
  • Covers solving name clashes
  • Shows idiomatic usage of import syntax (e.g. using qualified imports to import modules with similar APIs)

This should provide a high level overview of module structure: other individual lessons will cover the forms of various declarations (such as: type signatures and variable declarations; datatypes; typeclasses) and how to import and export them.