MapExtension<T> extension

Extension on Map to provide additional functionality and utility methods.

This extension enhances the capabilities of Map<T, T> by adding methods for:

• Checking key-value pair existence
• Retrieving and casting values to specific types
• Manipulating the map based on keys or values
• Comparing maps
• Safely accessing values with type-specific getters

These methods aim to simplify common map operations and provide more robust ways of working with map data in Dart.

on

• Map<T, T>

Methods

diffKeys<K, V>(Map<K, V> map) → Map<T, T>

Available on Map<T, T>, provided by the MapExtension extension

Returns a new map containing entries from this map that are not in map.

diffValues(Map<T, T> map) → Map<T, T>

Available on Map<T, T>, provided by the MapExtension extension

Returns a new map containing entries from this map that are not in map.

doesntHave(String key, T value) → bool

Available on Map<T, T>, provided by the MapExtension extension

Checks if the map does not contain the given key/value pair.

getBool(String key) → bool

Available on Map<T, T>, provided by the MapExtension extension

Retrieves a boolean value for the given key.

getDouble(String key, {double? defaultValue}) → double?

Available on Map<T, T>, provided by the MapExtension extension

Retrieves a double value for the given key.

getId({T? defaultValue}) → T?

Available on Map<T, T>, provided by the MapExtension extension

Retrieves the value associated with the 'id' key, if it exists.

getInt(String key, {int? defaultValue}) → int?

Available on Map<T, T>, provided by the MapExtension extension

Retrieves an integer value for the given key.

getList<K>(String key) → List<T>

Available on Map<T, T>, provided by the MapExtension extension

Retrieves a list of type T for the given key.

getString(String key, {String? defaultValue}) → String?

Available on Map<T, T>, provided by the MapExtension extension

Retrieves a string value for the given key.

has(String key, dynamic value) → bool

Available on Map<T, T>, provided by the MapExtension extension

Checks if the map contains the given key/value pair.

match(T condition, [String? byDefault = 'Invalid input']) → Object?

Available on Map<T, T>, provided by the MapExtension extension

Retrieves the value associated with condition key.

pick(List<T> keys) → Map<T, T>

Available on Map<T, T>, provided by the MapExtension extension

Creates a new map containing only the specified keys from this map.

removeNullValues() → Map<T, T>

Available on Map<T, T>, provided by the MapExtension extension

Creates a new map excluding entries with null values from this map.

retainKeys(List<T> keys) → Map<T, T>

Available on Map<T, T>, provided by the MapExtension extension

Removes key/value pairs from the map whose keys are not in the given keys list.