(Optional) C++ - Lambda Expressions
Author: Benjamin Qi
Defining anonymous function objects.
Introduction
Resources | |||
---|---|---|---|
CPP | reference | ||
UMich | |||
SO | |||
Microsoft |
Anything more beginner-friendly?
This section is not complete.
Any help would be appreciated! Just submit a Pull Request on Github.
Recursive Lambdas
Resources | |||
---|---|---|---|
open-std | |||
RIP Tutorial |
If we add the following from the link above in C++14:
namespace std {template<class Fun>class y_combinator_result {Fun fun_;public:template<class T>explicit y_combinator_result(T &&fun): fun_(std::forward<T>(fun)) {}template<class ...Args>
Then we can have code like the following!
int main() {cout << y_combinator([](auto gcd, int a, int b) -> int {return b == 0 ? a : gcd(b, a % b);})(20,30) << "\n"; // outputs 10}
Looks like ecnerwala uses these a lot.
Module Progress:
Join the USACO Forum!
Stuck on a problem, or don't understand a module? Join the USACO Forum and get help from other competitive programmers!
Give Us Feedback on (Optional) C++ - Lambda Expressions!
Leave suggestions for us by making a post on the USACO Forum! Ex: Unclear sections, mislabeled problems, etc.