Document opaque types

Closes https://github.com/gleam-lang/language-tour/issues/63

2 files changed, 0 insertions, 31 deletions

diff --git a/src/content/chapter5_advanced_features/lesson04_let_assert/code.gleam b/src/content/chapter5_advanced_features/lesson04_let_assert/code.gleam
deleted file mode 100644
index 2ba907a..0000000
--- a/src/content/chapter5_advanced_features/lesson04_let_assert/code.gleam
+++ /dev/null
@@ -1,16 +0,0 @@
-import gleam/io
-
-pub fn main() {
-  let a = unsafely_get_first_element([123])
-  io.debug(a)
-
-  let b = unsafely_get_first_element([])
-  io.debug(b)
-}
-
-pub fn unsafely_get_first_element(items: List(a)) -> a {
-  // This will panic if the list is empty.
-  // A regular `let` would not permit this partial pattern
-  let assert [first, ..] = items
-  first
-}
diff --git a/src/content/chapter5_advanced_features/lesson04_let_assert/en.html b/src/content/chapter5_advanced_features/lesson04_let_assert/en.html
deleted file mode 100644
index 29fd06c..0000000
--- a/src/content/chapter5_advanced_features/lesson04_let_assert/en.html
+++ /dev/null
@@ -1,15 +0,0 @@
-<p>
-  <code>let assert</code> is the final way to intentionally crash your Gleam
-  program. It is similar to the <code>panic</code> keyword in that it crashes
-  when the program has reached a point that should never be reached.
-</p>
-<p>
-  <code>let assert</code> is similar to <code>let</code> in that it is a way to
-  assign values to variables, but it is different in that the pattern can be
-  <i>partial</i>. The pattern does not need to match every possible value of the
-  type being assigned.
-</p>
-<p>
-  Like <code>panic</code> this feature should be used sparingly, and likely not
-  at all in libraries.
-</p>