Just An Application

June 14, 2013

Programming With Rust — Part Seven: Things We Need To Know – Strings And String Literals

1.0 The String Type

A Rust string is an immutable sequence of UTF-8 encoded Unicode characters of type str.

2.0 String Literals

A Rust string literal is a sequence of Unicode characters delimited by double-quotes.

As in other programming languages, to include a double-quote (‘”‘) in a string literal you must escape it using a backslash (‘\’).

3.0 Memory Allocation

A Rust string can be allocated in the managed heap of a Task

    let cod: @str = @"cod";

or the owned heap

    let dab: ~str = ~"dab";

but not on the stack.

A string literal that is not explicitly allocated in a managed heap or in the owned heap is allocated in static memory.

You can obtain a borrowed pointer to a string literal allocated in static memory like this

    let eel: &str = "eel";

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