test.cs

var result = someCollection
               .Where(c => c.Married && c.Gender == Genders.Female)
               .OrderBy(c => c.LastName)
               .ForEach(c => 
               {
                 c.LastName = $"{c.LastName}-{c.Partner.LastName}";
               });

Don't stop there!

var race = cars
    .Where(x => x.Fuel > .5)
    .Where(x => x.TirePressure = 55d)
    .ForEach(x => x.Start())
    .Where(x => Equals(x.Ready, true))
    .ForEach(x => x.Shift(Gears.Drive))
    .OrderBy(x => x.Position)
    .ForEach(x => x.Accelerate(.7))
    .Select(x => x.Telemetry);