我想使用LINQ Aggregate将以下代码优化为1行,但之前从未使用过Aggregate函数,虽然我尝试过,但我无法使其工作..
var sum = Aggregate(0.0, (group) => group.width + ????);
而不是
double sum = 0.0;
double height = 1.0;
foreach (var group in Groups)
{
sum = sum + group.width;
}
var rectPosition = new Rectangular(anchor.x, anchor.y,new BoxDimension(sum, height ));
任何帮助请...提前感谢
答案 0 :(得分:2)
说实话这已经足够了:
var sum = Groups.Select(x => x.Width).Sum();
var sum = Groups.Sum(x => x.Width);
但是,如果你想要Aggregate()
:
var sum = Groups.Select(x => x.Width).Aggregate((current, next) => current += next);