what-is-null-pointer-in-rust.md

What is null pointer in Rust

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A null pointer in Rust is a pointer that does not point to any valid object. It is represented by the type std::ptr::null(). It is used to indicate that a pointer is not pointing to a valid object.

Example code

let ptr: *const i32 = std::ptr::null();

Output example

ptr: *const i32 = 0x0

Code explanation

• let ptr: *const i32: declares a pointer ptr of type *const i32
• std::ptr::null(): returns a null pointer of type *const T

Helpful links

• Rust Documentation - std::ptr

group: rust-null