toolchest 0.1.0

Essential utility collection for Rust - the missing complement to itertools
Documentation 
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//! Type checking utilities

/// Trait for checking if a value is empty.
pub trait IsEmpty {
    /// Returns true if the value is considered empty.
    fn is_empty(&self) -> bool;
}

impl IsEmpty for str {
    fn is_empty(&self) -> bool {
        <str>::is_empty(self)
    }
}

impl IsEmpty for String {
    fn is_empty(&self) -> bool {
        String::is_empty(self)
    }
}

impl<T> IsEmpty for Vec<T> {
    fn is_empty(&self) -> bool {
        Vec::is_empty(self)
    }
}

impl<T> IsEmpty for &[T] {
    fn is_empty(&self) -> bool {
        <[T]>::is_empty(self)
    }
}

impl<K, V> IsEmpty for std::collections::HashMap<K, V> {
    fn is_empty(&self) -> bool {
        std::collections::HashMap::is_empty(self)
    }
}

/// Check if a value is empty.
///
/// Example:
/// ```rust
/// use toolchest::types::{IsEmpty, is_empty};
/// assert!(is_empty(""));
/// assert!(!is_empty(&vec![1]));
/// ```
pub fn is_empty<T: IsEmpty + ?Sized>(value: &T) -> bool {
    value.is_empty()
}