implementation of toolz's pipe method in Chapel

example10Pipe.chpl

proc notAdd(a: int, b: int) {
    return (a + b , a + b);
}

proc notMul(a: int, b: int) {
    return (a*b , a*b);
}

var h = [notAdd, notMul, notAdd, notMul, notAdd];

var data = (1,2);

proc pipe(in data, functionArray){
    for func in functionArray {
        data = func((...data));
    }
    return data;
}


writeln(pipe(data, h));


// how partial would be used here? imagine having "real" addition and multiplication functions and each function takes a tuple of values
// and return only one value. To make a pipeline of these functions, you can't have that behavior of having different number of argument 
// on the input and output arguments in a pipeline, so to keep this pipeline intact, we could use partial to make the functions in the pipeline
// stream to have one default argument and just send one argument through that pipeline

// check that https://stackoverflow.com/a/15331967/7644243