named-arguments

// re-factored as extension methods on user; updated Sold to use named-args as well

var transactions = new[]
                         {
                               theUser.StartedOn(monday),
                               theUser.Bought(2000, of: AYB, @for: 1980, on:tuesday),
                               theUser.Bought(3000, of: AYB, @for: 3204, on:tuesday),
                               theUser.Sold(1500, of: AYB, @at:1750, on:wednesday),
                               theUser.Bought(5000, of:AIK, @for:10000, on:wednesday),
                               theUser.Bought(4000, of:AKVA, @for: 40000, on:thursday),
                               theUser.Sold(150, of: AYB, @at: 175, on:thursday),
                               theUser.Bought(2500, of:APP, @for:25000,on:friday),
                               theUser.Bought(3000, of:AYB, @for: 3100, on:friday)
                          };