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--- 2019:notes_on_teaching_elixir [2019/05/31 12:44] – [Preferred method] adolfont
+++ 2019:notes_on_teaching_elixir [2020/11/19 11:42] (current) – external edit 127.0.0.1
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 ===== Ordering for teaching functions =====
+<html>
+<blockquote class="twitter-tweet" data-lang="en"><p lang="en" dir="ltr">Right now everyone teaches anonymous functions first because they are easier to express in iex. Here&#39;s our ordering: <br><br>1. We introduce the concept of a module. Not coding, just the concept. <br>2. Invoking M.f() in a module<br>3. defmodule/def. <br>4. Pipes. <br>5. Anon f.<br><br>I ❤️ this order</p>&mdash; Bruce Tate (@redrapids) <a href="https://twitter.com/redrapids/status/1121022240047403008?ref_src=twsrc%5Etfw">April 24, 2019</a></blockquote>
+<script async src="https://platform.twitter.com/widgets.js" charset="utf-8"></script>
+</html>
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+===== Calling functions =====
+Module, function and arguments.
+==== By arity ====
+=== Zeroary functions ===
+<code>
+Math.pi()
+alias :math, as: Math
+Math.pi()
+</code>
+=== Unary functions ===
+<code>
+Kenel.abs(-34)
+Kernel.abs (-34)
+Kernel.absolute(-34)
+</code>
+<code>
+Kernel.abs(-34)
+Kernel.abs -34
+Kernel.abs (-34)
+Kernel.round(34.6)
+Kernel.floor(34.6)
+Kernel.ceil(34.9)
+</code>
+=== Binary functions ===
+<code>
+Kernel.max(1,2)
+Kernel.max(2,1)
+Kernel.min(2,1)
+Kernel.div(10,4)
+Kernel.rem(10,4)
+Kernel.div(10,0)
+</code>