corlib 0.4.1

A various ideas library
Documentation 
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//Revise API

use std::fmt::Debug;

///
/// A key and a value, paired.
/// 
pub struct KeyValuePair<K, V>
    where K: PartialEq
{

    key: K,
    value: V

}

impl<K, V> KeyValuePair<K, V>
    where K: PartialEq
{

    pub fn new(key: K, value: V) -> Self
    {

        Self
        {

            key,
            value

        }

    }

    pub fn get_key_ref(&self) -> &K
    {

        &self.key

    }

    pub fn get_value_ref(&self) -> &V
    {

        &self.value

    }

    pub fn get_value_mut(&mut self) -> &mut V
    {

        &mut self.value

    }
    
}

impl<K, V> PartialEq for KeyValuePair<K, V>
    where K: PartialEq
{

    fn eq(&self, other: &Self) -> bool
    {

        self.key == other.key

    }

}

impl<K, V> Debug for KeyValuePair<K, V>
    where K: PartialEq + Debug, V: Debug
{

    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        f.debug_struct("KeyValuePair").field("key", &self.key).field("value", &self.value).finish()
    }
    
}