Fold vs reduce

foldvsreduce.cs

[Fact]
public void fold_vs_reduce()
{
    //fold takes an explicit initial value for the accumulator
    //Can choose the result type
    var foldResult = List(1, 2, 3, 4, 5)
        .Map(x => x * 10)
        .Fold(0m, (x, s) => s + x); // 150m

    //reduce uses the first element of the input list as the initial accumulator value
    //Result type will be the one of the list
    var reduceResult = List(1, 2, 3, 4, 5)
        .Map(x => x * 10)
        .Reduce((x, s) => s + x); // 150
}