From 235bdf1f3b463ae7bdb67196a8b28be434cde9d3 Mon Sep 17 00:00:00 2001 From: Peter Kolloch Date: Sun, 10 Jan 2016 10:54:25 +0100 Subject: [PATCH] Book on slices: Mention internal representation When I read the book, the following sentence of the reference documentation helped me greatly to understand slices: "Slices are a view into a block of memory represented as a pointer and a length." In this commit, I tried to integrate the gist of that into the slice section inside of "primitive-types.md". --- src/doc/book/primitive-types.md | 3 +++ 1 file changed, 3 insertions(+) diff --git a/src/doc/book/primitive-types.md b/src/doc/book/primitive-types.md index d6188fa7cdcf..9378632987a2 100644 --- a/src/doc/book/primitive-types.md +++ b/src/doc/book/primitive-types.md @@ -164,6 +164,9 @@ copying. For example, you might want to reference just one line of a file read into memory. By nature, a slice is not created directly, but from an existing variable binding. Slices have a defined length, can be mutable or immutable. +Internally, slices are represented as a pointer to the beginning of the data +and a length. + ## Slicing syntax You can use a combo of `&` and `[]` to create a slice from various things. The