Document opaque types

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

1 files changed, 0 insertions, 31 deletions

diff --git a/src/content/chapter5_advanced_features/lesson00_use/en.html b/src/content/chapter5_advanced_features/lesson00_use/en.html
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-<p>
-  Gleam lacks exceptions, macros, type classes, early returns, and a variety of
-  other features, instead going all-in with just first-class-functions and
-  pattern matching. This makes Gleam code easier to understand, but it can
-  sometimes result in excessive indentation.
-</p>
-<p>
-  Gleam's use expression helps out here by enabling us to write code that uses
-  callbacks in an unindented style, as shown in the code window.
-</p>
-
-<p>
-  The higher order function being called goes on the right hand side of the
-  <code>&lt;-</code> operator. It must take a callback function as its final
-  argument.
-</p>
-<p>
-  The argument names for the callback function go on the left hand side of the
-  <code>&lt;-</code> operator. The function can take any number of arguments,
-  including zero.
-</p>
-<p>
-  All the remaining code in the enclosing <code class="hljs">{}</code> block
-  becomes the body of the callback function.
-</p>
-<p>
-  This is a very capable and useful feature, but excessive application of
-  <code>use</code> may result in code that is unclear otherwise, especially to
-  beginners. Often using the regular function call syntax will result in more
-  approachable code!
-</p>