RDD.cpp

#include <iostream>
#include <vector>

using namespace std;

template <typename A>
class RDD {
public:
    vector<A> sequence;
    RDD(vector<A> sequence): sequence(sequence) {}

    template<typename Func>
    auto map(Func f) -> RDD<decltype(f(A()))> {
        auto r = vector<decltype(f(A()))>{f(A())};
        return RDD<decltype(f(A()))>(r);
    }
};

int main() {
    cout << "Hello, World!" << endl;
    vector<int> data {1, 2, 3, 4};
    RDD<int> rdd(data);
    auto r = rdd.map([](int a) -> double {
        return 1.5;
    });
    cout << r.sequence.front();
    return 0;
}

RDD.scala

object HelloWorld {
	def main(args: Array[String]) {
    println("Hello")
    val d = new RDD(Seq(1, 2))
    println(d.map(x => x * 2).sequence)
	}
}

class RDD[A](val sequence: Seq[A]) {
  def map[B](f: A => B): RDD[B] = {
    return new RDD(sequence.map(f))
  }
}

/Users/pedro/Documents/Code/GrappaRDD/RDD.cpp:8:6: error: prototype for 'RDD<decltype (f(A()))> RDD<A>::map(Func)' does not match any in class 'RDD<A>'
 auto RDD<A>::map(Func f) -> RDD<decltype(f(A()))> {
      ^
In file included from /Users/pedro/Documents/Code/GrappaRDD/RDD.cpp:1:0:
/Users/pedro/Documents/Code/GrappaRDD/RDD.h:22:10: error: candidate is: template<class A> template<class Func> RDD<decltype (f(A()))> RDD<A>::map(Func)
     auto map(Func f) -> RDD<decltype(f(A()))>;

[ 32%] Building C object third-party/graph500-generator/CMakeFiles/graph500-generator.dir/graph_generator.c.o
[ 32%] Building C object third-party/graph500-generator/CMakeFiles/graph500-generator.dir/make_graph.c.o
[ 35%] Building C object third-party/graph500-generator/CMakeFiles/graph500-generator.dir/splittable_mrg.c.o
[ 35%] Building C object third-party/graph500-generator/CMakeFiles/graph500-generator.dir/utils.c.o
Linking C static library libgraph500-generator.a
[ 35%] Built target graph500-generator
Scanning dependencies of target all-third-party
[ 35%] Built target all-third-party
Scanning dependencies of target Communicator
[ 37%] Building CXX object system/CMakeFiles/Communicator.dir/Communicator.cpp.o
In file included from /home/pedro/dependencies/grappa/system/Communicator.hpp:61:0,
                 from /home/pedro/dependencies/grappa/system/Communicator.cpp:47:
/home/pedro/dependencies/grappa/system/Communicator.hpp: In member function ‘void Communicator::barrier_notify()’:
/home/pedro/dependencies/grappa/system/Communicator.hpp:293:60: error: ‘MPI_Ibarrier’ was not declared in this scope
     MPI_CHECK( MPI_Ibarrier( grappa_comm, &barrier_request ) );
                                                            ^
/home/pedro/dependencies/grappa/system/common.hpp:400:20: note: in definition of macro ‘MPI_CHECK’
     if( (retval = (mpi_call)) != 0 ) {                                  \
                    ^
/home/pedro/dependencies/grappa/system/Communicator.cpp: In member function ‘void Communicator::init(int*, char***)’:
/home/pedro/dependencies/grappa/system/Communicator.cpp:141:51: error: ‘MPI_COMM_TYPE_SHARED’ was not declared in this scope
   MPI_CHECK( MPI_Comm_split_type( MPI_COMM_WORLD, MPI_COMM_TYPE_SHARED, 0, MPI_INFO_NULL, &locale_comm ) );
                                                   ^
/home/pedro/dependencies/grappa/system/common.hpp:400:20: note: in definition of macro ‘MPI_CHECK’
     if( (retval = (mpi_call)) != 0 ) {                                  \
                    ^
/home/pedro/dependencies/grappa/system/Communicator.cpp:141:104: error: ‘MPI_Comm_split_type’ was not declared in this scope
   MPI_CHECK( MPI_Comm_split_type( MPI_COMM_WORLD, MPI_COMM_TYPE_SHARED, 0, MPI_INFO_NULL, &locale_comm ) );
                                                                                                        ^
/home/pedro/dependencies/grappa/system/common.hpp:400:20: note: in definition of macro ‘MPI_CHECK’
     if( (retval = (mpi_call)) != 0 ) {                                  \
                    ^
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