Looping through key-value pairs

To capture a key-value pair in a local variable, we need to use the aptly-named KeyValuePair type, assigning both the key and value types to match the dictionary's corresponding types. Since KeyValuePair is its type, it acts just like any other element type, as a local variable.

For example, let's loop through the itemInventory dictionary we created earlier in the Dictionaries section and debug each key-value like a shop item description:

Dictionary<string, int> itemInventory = new Dictionary<string, int>()
{
    { "Potion", 5},
    { "Antidote", 7},
    { "Aspirin", 1}
};
 
foreach(KeyValuePair<string, int> kvp in itemInventory)
{
 Debug.LogFormat("Item: {0} - {1}g", kvp.Key, kvp.Value);
} 

We've specified a local variable of KeyValuePair, called kvp, which is a common naming convention in programming like calling the for loop initializer i, and set the key...