From f92661980deac22b54e79cd44c25caba17910c95 Mon Sep 17 00:00:00 2001 From: Louis Pilfold Date: Thu, 18 Jan 2024 16:44:27 +0000 Subject: Last of the content! --- .../lesson06_generic_functions/code.gleam | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 src/content/chapter1_functions/lesson06_generic_functions/code.gleam (limited to 'src/content/chapter1_functions/lesson06_generic_functions/code.gleam') diff --git a/src/content/chapter1_functions/lesson06_generic_functions/code.gleam b/src/content/chapter1_functions/lesson06_generic_functions/code.gleam new file mode 100644 index 0000000..e232bf8 --- /dev/null +++ b/src/content/chapter1_functions/lesson06_generic_functions/code.gleam @@ -0,0 +1,19 @@ +import gleam/io + +pub fn main() { + let add_one = fn(x) { x + 1 } + let exclaim = fn(x) { x <> "!" } + + // Invalid, Int and String are not the same type + // twice(10, exclaim) + + // Here the type variable is replaced by the type Int + io.debug(twice(10, add_one)) + + // Here the type variable is replaced by the type String + io.debug(twice("Hello", exclaim)) +} + +fn twice(argument: value, function: fn(value) -> value) -> value { + function(function(argument)) +} -- cgit v1.2.3