module d_webservice_example.util.algorithm;

import d_webservice_example.util.meta : from;

auto findFirst(alias pred, InputRange)(InputRange haystack)
        if (from!"std.range".isInputRange!InputRange)
{
    import optional.optional : toOptional;
    import std.algorithm.searching : find;
    import std.range : take;

    return haystack.find!(pred).take(1).toOptional();
}