Store data values in a Map object, which is a data
structure that associates each value with a corresponding key. A
Map object is similar to a dictionary or associative
array in that you can use keys to retrieve values from it. Keys can be
numbers or text, providing more flexibility for data access than array
indices.
containers.Map | Object that maps values to unique keys |
isKey | Determine if Map object contains key |
keys | Return keys of Map object |
remove | Delete key-value pairs from Map object |
values | Return values of Map object |
Overview of Map Data Structure
A Map is a type of fast key lookup data structure that offers a flexible means of indexing into its individual elements. The indices for a Map can be nearly any scalar numeric value or a character vector.
A Map is an object, or instance, of the containers.Map class.
Create a Map using the containers.Map class.
This example shows how to find all the keys and values in a Map.
Read and Write Using Key Index
This example shows how to read from a Map structure and how to add new key/value pairs.
This example shows how to remove and modify keys and values in a Map structure.
This example shows how to store structures or cell arrays in a Map structure.