Here is an overview of new features in C#:
- Out variables
- Pattern matching
- Tuples
- Deconstruction
- Discards
- Local Functions
- Binary Literals
- Digit Separators
- Ref returns and locals
- Generalized async return types
- More expression-bodied members
- Throw expressions
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// Out variables |
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// Old way |
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int parsedOld; |
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string parseMeOld = “222224“; |
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int.TryParse(parseMeOld, out parsedOld); |
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Console.WriteLine(parsedOld); |
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// New way |
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string parseMe = “3115“; |
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int.TryParse(parseMe, out int parsed); |
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Console.WriteLine(parsed); |
Tuples
| List<int> numbers = new List<int> { 3, 5, 11, 4, 7 }; |
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var result = GetLowestHighest(numbers); |
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Console.WriteLine(result.Item1); // ugly? |
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Console.WriteLine(result.Item2); // yeah, ugly.. |
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// Notice the return type of the method. It’s tuple |
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private static(int, int) GetLowestHighest(IReadOnlyCollection < int > numbers) { |
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int lowest = numbers.Min(n => n); |
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int highest = numbers.Max(n => n); |
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return (lowest, highest); |
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} |
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