Improve introduction of modules and imports

Thanks @RyanBrewer317!

2 files changed, 59 insertions, 0 deletions

diff --git a/src/content/chapter0_basics/lesson06_floats/code.gleam b/src/content/chapter0_basics/lesson06_floats/code.gleam
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--- /dev/null
+++ b/src/content/chapter0_basics/lesson06_floats/code.gleam
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+import gleam/io
+import gleam/float
+
+pub fn main() {
+  // Float arithmetic
+  io.debug(1.0 +. 1.5)
+  io.debug(5.0 -. 1.5)
+  io.debug(5.0 /. 2.5)
+  io.debug(3.0 *. 3.5)
+
+  // Float comparisons
+  io.debug(2.2 >. 1.3)
+  io.debug(2.2 <. 1.3)
+  io.debug(2.2 >=. 1.3)
+  io.debug(2.2 <=. 1.3)
+
+  // Equality works for any type
+  io.debug(1.1 == 1.1)
+  io.debug(2.1 == 1.2)
+
+  // Division by zero is not an error
+  io.debug(3.14 /. 0.0)
+
+  // Standard library float functions
+  io.debug(float.max(2.0, 9.5))
+  io.debug(float.ceiling(5.4))
+}
diff --git a/src/content/chapter0_basics/lesson06_floats/en.html b/src/content/chapter0_basics/lesson06_floats/en.html
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+<p>Gleam's <code>Float</code> type represents numbers that are not integers.</p>
+<p>
+  Gleam's numerical operators are not overloaded, so there are dedicated
+  operators for working with floats.
+</p>
+<p>
+  Floats are represented as 64 bit floating point numbers on both the Erlang and
+  JavaScript runtimes. The floating point behaviour is native to their
+  respective runtimes, so their exact behaviour will be slightly different
+  on the two runtimes.
+</p>
+<p>
+  Under the JavaScript runtime, exceeding the maximum (or minimum) representable
+  value for a floating point value will result in <code>Infinity</code> (or
+  <code>-Infinity</code>). Should you try to divide two infinities you will
+  get <code>NaN</code> as a result.
+</p>
+<p>
+  When running on the BEAM any overflow will raise an error. So there is
+  no <code>NaN</code> or <code>Infinity</code> float value in the Erlang
+  runtime.
+</p>
+<p>
+  Division by zero will not overflow, but is instead defined to be zero.
+</p>
+<p>
+  The
+  <a href="https://hexdocs.pm/gleam_stdlib/gleam/float.html"
+    ><code>gleam/float</code></a
+  >
+  standard library module contains functions for working with floats.
+</p>