Lua Library

Data Structures

Lua Dictionaries

Using Dictionaries in Tables

Lua dictionaries use tables with key-value pairs.

Introduction to Lua Dictionaries

In Lua, dictionaries are implemented using tables. Tables in Lua are versatile data structures that can be used to represent arrays, dictionaries, and other complex data structures. A dictionary in Lua is essentially a table that uses key-value pairs to store data.

Creating a Lua Dictionary

To create a dictionary in Lua, you simply define a table with keys and their corresponding values. Here's a simple example of a Lua dictionary:

Accessing Values in a Dictionary

Accessing values in a Lua dictionary is straightforward. You use the key to retrieve its corresponding value. Here's how you can access values from the dictionary we created:

Adding and Modifying Key-Value Pairs

Adding new key-value pairs or modifying existing ones in a Lua dictionary is simple. You just assign a value to a key:

Removing Key-Value Pairs

To remove a key-value pair from a Lua dictionary, you set the key to nil:

Iterating Over a Lua Dictionary

To iterate over all key-value pairs in a Lua dictionary, you can use the pairs function. This allows you to access each key and its value:

Use Cases for Lua Dictionaries

Lua dictionaries are useful in scenarios where you need to associate unique keys with specific values. Common use cases include configurations, mappings, and objects representation.

Data Structures

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