Returns one value attached to 'key', or 'default_value' if 'key'
is not in the multi-map. The actual value returned if more than one
values is attached to the same key is not specified.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2024-08-06 UTC."],[[["`RevImmutableMultiMap` is a class within the OR-Tools constraint solver that provides a way to store and retrieve key-value pairs."],["It allows insertion of new key-value pairs but does not support removal or modification of existing entries, ensuring immutability after initial population."],["This class offers methods like `ContainsKey` for checking the presence of a key, `FindWithDefault` for retrieving a value (or a default if not found), and `Insert` to add new pairs."],["Users can ascertain the number of stored key-value pairs using the `num_items` method."]]],["The `RevImmutableMultiMap` class in C++ provides methods for managing a multi-map. Key actions include checking for the existence of a key via `ContainsKey`, retrieving a value associated with a key using `FindWithDefault` (returning a default if the key is absent), and inserting key-value pairs with `Insert`. The number of items can be checked with `num_items`. It has also a constructor `RevImmutableMultiMap` and a destructor `~RevImmutableMultiMap`.\n"]]
