Hello, World · Mario M. Blog

First post. Testing all available components.

Code blocks

Plain block with copy button:

fn greet(name: &str) -> String {
    format!("Hello, {}!", name)
}

fn main() {
    println!("{}", greet("world"));
}

Block with filename title:

fn greet(name: &str) -> String {
    format!("Hello, {}!", name)
}

fn main() {
    println!("{}", greet("world"));
}

Block with filename and godbolt link:

fn greet(name: &str) -> String {
    format!("Hello, {}!", name)
}

fn main() {
    println!("{}", greet("world"));
}

Block with external link button:

fn greet(name: &str) -> String {
    format!("Hello, {}!", name)
}

fn main() {
    println!("{}", greet("world"));
}

Inline code looks like this.

01 - CALLOUT BLOCKS

NOTE

Default callout. Uses the green accent. Good for general notes and observations.

KEY INSIGHT

Teal callout. Use for important takeaways, things worth remembering.

INFO

Blue callout. Good for background context or supplementary information.

WARNING

Yellow callout. Use for gotchas, caveats, things that need attention.

DANGER ZONE

Salmon callout. Reserve for unsafe code, footguns, things that can go wrong badly.

02 - MORE LANGUAGES

const std = @import("std");

pub fn main() void {
    const msg = "hello, world";
    std.debug.print("{s}\n", .{msg});
}

#include <stdio.h>

int main(void) {
    printf("hello, world\n");
    return 0;
}

[package]
name = "example"
version = "0.1.0"
edition = "2021"

[dependencies]
serde = { version = "1", features = ["derive"] }

03 - COMPARISON TABLE

Feature	Rust	Zig	C
Memory safety	Compile-time borrow checker	Optional, manual	Manual
Build system	Cargo	Built-in `zig build`	Make / CMake
Error handling	`Result<T, E>`	Error unions	Return codes
Null safety	No null, use `Option<T>`	Optional types `?T`	Nullable pointers
Compile speed	Slow	Fast	Fast
Runtime	Zero-cost abstractions	Zero-cost	Zero-cost