Filters an array of date strings to keep only business days. Business day = not weekend (Sat/Sun) and not a holiday in any of the specified countries.
Array of date strings (YYYY-MM-DD)
Country code(s) for holiday calendar, e.g. "SE", "US", ["SE", "NO"]
Array of business-day date strings (subsequence of input, preserving order)
Filters an array of date strings to keep only business days. Business day = not weekend (Sat/Sun) and not a holiday in any of the specified countries.