Round 1 Day 3

Keep Moving Forward

Three days ago I started the #100DaysOfCode Challenge, and today I finished elixirschool.com basics for elixir. This feels great because I started those basics over a year ago and stopped.

Quick TL;DR; for today.

Testing

• ExUnit is built in to elixir, so I'll prolly be using that for my testing framework.
• Test Mocks. The elixir community has an interesting take on mocking. The whole idea revolves around using "mocks" as a noun and not a verb. The concept is to keep parts of the code isolated and easier to test.
• If you want to read more, check out the original blog post (here)[http://blog.plataformatec.com.br/2015/10/mocks-and-explicit-contracts/]

Comprehensions

• Generators:
  • are neato
  • multiple generators can be used at a time
• Filters can be added to generators as you iterate over an Enum
  • Ex. is_even => for x <- 1..10, is_even(x), do: x

Strings

• Prolly never gonna need to use Graphemes or Codepoints

Time

• Time.utc_now returns a "Time Struct" ~T[19:39:31.056226]
• Date.utc_today returns a "Date Struct" ~D[2021-02-15]
• NaiveDateTime feels .... useless. Its Date + Time with no timezone /shrug
• I'll prolly most likly use DateTime instead.

Custom Mix Tasks

• Are located in lib/mix/tasks/*.ex
• When creating a Task you have to use the macro use Mix.Task
• Mix tasks do not autoload dependencies

iEX Helpers (cool things about the REPL)

• Tab autocomplete
• .iex.exs is a local file to configure the repl
• h Module or Function renders the docs
• r Module will recompile the module

Tada. Day 3. Fin.
If you want to reach out, you can find me on (The Tweeters)[https://twitter.com/basicbrogrammer]