private static QuantityFormat <TUnit> CreateFromValueAndSymbolFormats(ValueAndSymbolFormatKey key)
{
var valueFormat = DoubleFormatCache.GetOrCreate(key.ValueFormat);
var symbolFormat = UnitFormatCache <TUnit> .GetOrCreate(key.SymbolFormat, out TUnit unit);
return(QuantityFormat <TUnit> .Create(valueFormat, symbolFormat, unit));
}
internal static QuantityFormat <TUnit> GetOrCreate(string valueFormat, string symbolFormat)
{
var key = new ValueAndSymbolFormatKey(valueFormat, symbolFormat);
return(Cache.GetOrAdd(key, _ => CreateFromValueAndSymbolFormats(key)));
}