must 0.2.0

assertion library for rust
Documentation 
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pub trait Cased {
	fn is_upper(&self) -> bool;

	fn is_lower(&self) -> bool;
}

impl Cased for str {
	fn is_upper(&self) -> bool {
		self.chars().all(char::is_uppercase)
	}
	fn is_lower(&self) -> bool {
		self.chars().all(char::is_lowercase)
	}
}

impl Cased for char {
	fn is_upper(&self) -> bool {
		self.is_uppercase()
	}
	fn is_lower(&self) -> bool {
		self.is_lowercase()
	}
}

impl Cased for String {
	fn is_upper(&self) -> bool {
		self.chars().all(char::is_uppercase)
	}
	fn is_lower(&self) -> bool {
		self.chars().all(char::is_lowercase)
	}
}

impl<'a> Cased for &'a str {
	fn is_upper(&self) -> bool {
		self.chars().all(char::is_uppercase)
	}
	fn is_lower(&self) -> bool {
		self.chars().all(char::is_lowercase)
	}
}