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diff --git a/lessons/src/lesson030_tuples/text.html b/lessons/src/lesson030_tuples/text.html new file mode 100644 index 0000000..f121a9d --- /dev/null +++ b/lessons/src/lesson030_tuples/text.html @@ -0,0 +1,20 @@ +<p> + Lists are good for when we want a collection of one type, but sometimes we + want to combine multiple values of different types. In this case tuples are a + quick and convenient option. +</p> +<p> + The tuple access syntax can be used to get elements from a tuple without + pattern matching. <code>some_tuple.0</code> gets the first element, + <code>some_tuple.1</code> gets the second element, etc. +</p> +<p> + Tuples are generic types, they have type parameters for the types they + contain. <code>#(1, "Hi!")</code> has the type <code>#(Int, String)</code>, + and <code>#(1.4, 10, 48)</code> has the type <code>#(Float, Int, Int)</code>. +</p> +<p> + Tuples are most commonly used to return 2 or 3 values from a function. Other + times it is often is clearer to use a <em>custom type</em>, which we will + cover next. +</p> |