Installation, Hello World, Cargo | Learn Rust with Rookie

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📝 Installing rustup on Linux

What is Linker?

A linker is an essential tool in the process of compiling a program. It helps one to join compiled output into one file.

A C compiler is useful because it contains a linker and many Rust packages depending on C code needs C compiler.

Ubuntu offer a default gcc compiler.

You can use

to check your gcc version:

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You can see more about linker in Linker - GeeksforGeeks

Installing rustup

You can use

to download rustup, and you will see something like below in your terminal:

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You can also use

to update Rust to the newest version:

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📝 Hello world

Creating a Project Directory

Go to your choosen path and type:

As a rustacean, you should use UNC(Universal Naming Convention) which use ‘_’ to seperate words in name of directory and variable etc.

Writing and running a Rust Program

Make a new source file and call it main.rs(I choose vim in this blog, you can use and editor you like, even Graphical Editor):

Type below into main.rs(type ‘I’ for vim user):

fn is kind of like void main() in C++ or def main() in Python. We will see the difference in the future.

Println! is kind of like printf in C++ or printin Python. But in rust, a ‘!’ is related to a concept Macro, or more precisely, it calls a macro. I will explain it in the distant future(maybe untill the last one-third part of the tutorial).

Save the file(for vim user):

Then go back to your terminal:

rustc is the compiler for the Rust programming language, provided by the project itself.

./main is running ‘main’ command in Linux.

📝 Hello world

Creating a Project with Cargo

Building and Running a Cargo project

🤗 Summary

📎 Reference

My vedio on Youtube

Document of Cargo

💡

Any problems about Rust can be announced on my Youtube vedio comments.