什么是 selectMany.ToArray()
的方法?它是一个内置的方法 C#
?
What is selectMany.ToArray()
method? Is it a built in method in C#
?
我需要二维数组转换为一维数组。
I need to convert two dimensional array to one dimensional array.
如果你的意思的锯齿的阵列( T [] []
) ,的SelectMany
是你的朋友。但是,如果你的意思的矩形的阵列( T [,]
),那么你可以列举的日期数据通过的foreach
- 或:
If you mean a jagged array (T[][]
), SelectMany
is your friend. If, however, you mean a rectangular array (T[,]
), then you can just enumerate the date data via foreach
- or:
int[,] from = new int[,] {{1,2},{3,4},{5,6}};
int[] to = from.Cast<int>().ToArray();