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Nested attributes unpermitted parameters
...name, :age, pets_attributes: [:id, :name, :category])
Don't.
Source:
https://github.com/rails/rails/issues/9454#issuecomment-14167664
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Best way to test if a generic type is a string? (C#)
...tString(object obj)
{
return obj is string;
}
https://docs.microsoft.com/en-US/dotnet/csharp/language-reference/keywords/is
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