mylibrary_ 1.2.7

my personal library
Documentation 
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//#![allow(unused)]

pub trait Size {
	fn size(&self,) -> usize;
}
impl Size for usize {
	fn size(&self,) -> usize { *self }
}
impl Size for MyUsize {
	fn size(&self,) -> usize { self.0 }
}

#[derive(Clone,)]
pub struct MyStr(String,);
impl<S: Size,> std::ops::Index<S,> for MyStr {
	type Output = str;

	fn index(&self, index: S,) -> &Self::Output { &self.0[index.size()..=index.size()] }
}

#[derive(PartialOrd, PartialEq, Clone, Copy,)]
pub struct MyUsize(usize,);

impl std::ops::RangeBounds<usize,> for MyUsize {
	fn start_bound(&self,) -> std::ops::Bound<&usize,> { std::ops::Bound::Included(&self.0,) }

	fn end_bound(&self,) -> std::ops::Bound<&usize,> { std::ops::Bound::Included(&self.0,) }
}

pub trait CustomMul {
	fn mul(&self, times: char,) -> String;
}
impl CustomMul for str {
	fn mul(&self, times: char,) -> String {
		let r = times as u8 - '0' as u8;
		match self {
			"0" => 0 * r,
			"1" => 1 * r,
			"2" => 2 * r,
			"3" => 3 * r,
			"4" => 4 * r,
			"5" => 5 * r,
			"6" => 6 * r,
			"7" => 7 * r,
			"8" => 8 * r,
			"9" => 9 * r,
			_ => panic!("incorrect usage of CustomMul"),
		}
		.to_string()
	}
}