Use Mapped Lambdas for a Jump Table
Explore how to build a simple jump table in C++20 using an STL map and anonymous lambdas. Learn to replace traditional if/else or switch branching with a clean, efficient map-based solution that stores lambdas as payloads and executes user-selected actions with minimal code.
We'll cover the following...
We'll cover the following...
A jump table is a useful pattern when we want to select an action from a user or other input. Jump tables are often implemented in if/else or switch structures. In this recipe, we’ll build a concise jump table using only an STL map and anonymous lambdas.
How to do it
It’s easy to build a simple jump table from a map and lambdas. The map provides simple indexed navigation and the lambda can be stored as ...