Whitespace
Whitespace is any non-empty string containing only characters that have the Pattern_White_Space Unicode property, namely:
-
U+0009(horizontal tab,'\t') -
U+000A(line feed,'\n') -
U+000B(vertical tab) -
U+000C(form feed) -
U+000D(carriage return,'\r') -
U+0020(space,' ') -
U+0085(next line) -
U+200E(left-to-right mark) -
U+200F(right-to-left mark) -
U+2028(line separator) -
U+2029(paragraph separator)
Rust is a "free-form" language, meaning that all forms of whitespace serve only to separate tokens in the grammar, and have no semantic significance.
A Rust program has identical meaning if each whitespace element is replaced with any other legal whitespace element, such as a single space character.
© 2010 The Rust Project Developers
Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
https://doc.rust-lang.org/reference/whitespace.html