From 09a8a96664fadbc2933024910b95526f7d66843f Mon Sep 17 00:00:00 2001 From: Louis Pilfold Date: Thu, 4 Jan 2024 20:06:40 +0000 Subject: More content! --- src/content/chapter0_basics/lesson14_lists/code.gleam | 16 ++++++++++++++++ src/content/chapter0_basics/lesson14_lists/text.html | 19 +++++++++++++++++++ 2 files changed, 35 insertions(+) create mode 100644 src/content/chapter0_basics/lesson14_lists/code.gleam create mode 100644 src/content/chapter0_basics/lesson14_lists/text.html (limited to 'src/content/chapter0_basics/lesson14_lists') diff --git a/src/content/chapter0_basics/lesson14_lists/code.gleam b/src/content/chapter0_basics/lesson14_lists/code.gleam new file mode 100644 index 0000000..646ad6e --- /dev/null +++ b/src/content/chapter0_basics/lesson14_lists/code.gleam @@ -0,0 +1,16 @@ +import gleam/io + +pub fn main() { + let ints = [1, 2, 3] + + io.debug(ints) + + // Immutably prepend + io.debug([-1, 0, ..ints]) + + // Uncomment this to see the error + // io.debug(["zero", ..ints]) + + // The original lists are unchanged + io.debug(ints) +} diff --git a/src/content/chapter0_basics/lesson14_lists/text.html b/src/content/chapter0_basics/lesson14_lists/text.html new file mode 100644 index 0000000..dd07cd7 --- /dev/null +++ b/src/content/chapter0_basics/lesson14_lists/text.html @@ -0,0 +1,19 @@ +

+ Lists are ordered collections of values. +

+

+ List is a generic type, having a type parameter + for the type of values it contains. A list of ints has the type + List(Int), and a list of strings has the type + List(String). +

+

+ Lists are immutable single-linked lists, meaning they are very efficient to + add and remove elements from the front of the list. +

+

+ Counting the length of a list or getting elements from other positions in the + list is expensive and rarely done. It is rare to write algorithms that index + into sequences in Gleam, but but when they are written a list is not the right + choice of data structure. +

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