摘要：
This is a problem which can occur when there is an old version of a DLL still lingering somewhere around.Make sure that the latest assemblies are depl 阅读全文
摘要：
https://www.codewars.com/kata/printing-array-elements-with-comma-delimiters/train/csharp 关于数组类型的判断，可以使用 a.GetType().IsArray 阅读全文