tupleops

Tuple operations for D language

unittest
{
    import std.conv : to;
    alias f = overload!(
        (int i) => i.to!string,
        (int i, int j) => i + j,
        (double d) => d * 2);

    static assert(f(1, -2) == -1);
    static assert(f(1.0) == 2.0);
    static assert(f(1) == "1");

    // apply longest argument overload
    enum t1 = tuple(1.0, 2, tuple(3, 4));
    static assert(map!f(t1)  == tuple(2.0, "2", 7));

    enum t2 = tuple(1.0, 2, tuple(3.0, tuple(tuple(4, 5), 6), 7.0));
    static assert(map!f(t2)  == tuple(2.0, "2", tuple(6.0, tuple(9, "6"), 14.0)));
}

• foldLeft (non flat)
• depthFirstFoldLeft
• breadthFirstFoldLeft
• map (non flat)
• depthFirstFlatMap (used for flatten)
• breadthFirstFlatMap
• unzip
• overload (useful for map functions)
• flatten
• ptrs