Rust public
Created By: chatGPT
Rust is a systems programming language focused on speed, memory safety, and parallelism. One of the key features of Rust is its visibility modifiers, which allow you to control the access level of various items such as structs, enums, modules, and functions. The most common visibility modifier is public. When you declare an item as public, it can be accessed from other modules. Here's how you can declare public items in Rust.
pub struct PublicStruct {\n pub field_one: i32,\n pub field_two: String,\n}\n\npub fn public_function() {\n println!("This is a public function.");\n}To make a struct public, you need to use the pub keyword before the struct definition. Similarly, you can make individual fields of the struct public by using the pub keyword before their type. This allows other modules to create instances of the struct and access its fields. Here’s an example:
pub mod my_module {\n pub struct PublicStruct {\n pub field_one: i32,\n pub field_two: String,\n }\n\n pub fn public_function() {\n println!("This is a public function.");\n }\n}Now, if you want to access
PublicStruct and public_function from another module, you can do so as follows. This demonstrates how to use the public items defined in my_module.mod my_module;\n\nfn main() {\n let instance = my_module::PublicStruct {\n field_one: 10,\n field_two: String::from("Hello"),\n };\n\n println!("Field One: {}", instance.field_one);\n my_module::public_function();\n}It's important to note that by default, items in Rust are private and can only be accessed from within the module where they are defined. The pub keyword is essential for items you want to expose to other modules. Additionally, Rust has other visibility modifiers such as
pub(crate) and pub(super), which provide more granular visibility options based on the needs of your program.pub struct PublicStruct {\n pub(crate) field_one: i32, // accessible within the same crate\n pub(super) field_two: String, // accessible in parent module\n}