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### Option | ||
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#### Book Sections | ||
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To learn about Option<T>, check out these links: | ||
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- [Option Enum Format](https://doc.rust-lang.org/stable/book/ch10-01-syntax.html#in-enum-definitions) | ||
- [Option Module Documentation](https://doc.rust-lang.org/std/option/) | ||
- [Option Enum Documentation](https://doc.rust-lang.org/std/option/enum.Option.html) |
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//option1.rs | ||
//Make me compile! Execute `rustlings hint option1` for hints | ||
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//I AM NOT DONE | ||
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//you can modify anything EXCEPT for this function's sig | ||
fn print_number(maybe_number: Option<u16>) { | ||
println!("printing: {}", *maybe_number); | ||
} | ||
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fn main() { | ||
print_number(13); | ||
print_number(99); | ||
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let mut numbers: [Option<u16>; 5]; | ||
for iter in 0..5 { | ||
let number_to_add: u16 = { | ||
((iter * 5) + 2) / (4 * 16); | ||
}; | ||
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numbers[iter] = number_to_add; | ||
} | ||
} |
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