STL
Noun · Development
Definitions
The Standard Template Library — a core part of C++ providing generic containers (vector, map, set), algorithms (sort, find, transform), and iterators for efficient, type-safe data manipulation.
In plain English: The built-in toolbox of data structures and algorithms that comes with C++, so you do not have to write your own from scratch.
Example: "Just use std::unordered_map from the STL instead of rolling your own hash table."