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README.md |
README.md
easy_traits
Instructions
Your task is to implement the trait AppendStr
for the type StringValue
.
The trait AppendStr
has the following functions:
append_str
: that appends the string to thevalue
.append_number
: that appends the number to thevalue
.remove_punctuation_marks
: that removes punctuation from thevalue
(.
,,
,?
and!
).
Expected Function
#[derive(Clone)]
pub struct StringValue {
pub value: String,
}
pub trait AppendStr {
fn append_str(&mut self, str_to_append: String) -> Self;
fn append_number(&mut self, nb_to_append: f64) -> Self;
fn remove_punctuation_marks(&mut self) -> Self;
}
impl AppendStr for StringValue {
}
Usage
Here is a program to test your function.
use easy_traits::*;
fn main() {
let mut str_aux = StringValue {
value: String::from("hello"),
};
println!("Before append: {}", str_aux.value);
str_aux.append_str(String::from(" there!"));
println!("After append: {}", str_aux.value);
str_aux.remove_punctuation_marks();
println!("After removing punctuation: {}", str_aux.value);
}
And its output
$ cargo run
Before append: hello
After append: hello there!
After removing punctuation: hello there
$