I know this is a simple question but I’m stacked here.
In python is so easy to perform this operation but in C# I don’t know the exact type of input.
I just need to read a list and concatenate some substring.
Change the input type of value in the function signature from array to string. Do the same in the foreach statement.
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Change the input signature to a 2D list:
List<List<string>> value
The compiler is expecting a 1D list so the embedded foreach loop is therefore acting on characters hence the error.
