markjprice/cs11dotnet7
1
0
Fork 0
mirror of https://github.com/markjprice/cs11dotnet7.git synced 2026-04-04 13:57:37 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Initial commit

Browse source
This commit is contained in:
Mark J Price 2022-09-17 14:09:41 +01:00
parent 7a4066f965
commit bf63cf7d4b
6 changed files with 212 additions and 110 deletions
Download patch file Download diff file Expand all files Collapse all files

36
vscode/Chapter03/Arrays/Program.cs
View file

@ -68,3 +68,39 @@ for (int row = 0; row <= jagged.GetUpperBound(0); row++)
WriteLine($"Row {row}, Column {col}: {jagged[row][col]}");
}
}
// Pattern matching with arrays
int[] sequentialNumbers = new int[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
int[] oneTwoNumbers = new int[] { 1, 2 };
int[] oneTwoTenNumbers = new int[] { 1, 2, 10 };
int[] oneTwoThreeTenNumbers = new int[] { 1, 2, 3, 10 };
int[] primeNumbers = new int[] { 2, 3, 5, 7, 11, 13, 17, 19, 23, 29 };
int[] fibonacciNumbers = new int[] { 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89 };
int[] emptyNumbers = new int[] { };
int[] threeNumbers = new int[] { 9, 7, 5 };
int[] sixNumbers = new int[] { 9, 7, 5, 4, 2, 10 };
WriteLine($"{nameof(sequentialNumbers)}: {CheckSwitch(sequentialNumbers)}");
WriteLine($"{nameof(oneTwoNumbers)}: {CheckSwitch(oneTwoNumbers)}");
WriteLine($"{nameof(oneTwoTenNumbers)}: {CheckSwitch(oneTwoTenNumbers)}");
WriteLine($"{nameof(oneTwoThreeTenNumbers)}: {CheckSwitch(oneTwoThreeTenNumbers)}");
WriteLine($"{nameof(primeNumbers)}: {CheckSwitch(primeNumbers)}");
WriteLine($"{nameof(fibonacciNumbers)}: {CheckSwitch(fibonacciNumbers)}");
WriteLine($"{nameof(emptyNumbers)}: {CheckSwitch(emptyNumbers)}");
WriteLine($"{nameof(threeNumbers)}: {CheckSwitch(threeNumbers)}");
WriteLine($"{nameof(sixNumbers)}: {CheckSwitch(sixNumbers)}");
static string CheckSwitch(int[] values) => values switch
{
[] => "Empty array",
[1, 2, _, 10] => "Contains 1, 2, any single number, 10.",
[1, 2, .., 10] => "Contains 1, 2, any range including empty, 10.",
[1, 2] => "Contains 1 then 2.",
[int item1, int item2, int item3] =>
$"Contains {item1} then {item2} then {item3}.",
[0, _] => "Starts with 0, then one other number.",
[0, ..] => "Starts with 0, then any range of numbers.",
[2, .. int[] others] => $"Starts with 2, then {others.Length} more numbers.",
[..] => "Any items in any order.",
};