Swift - Arrays - Versionsgeschichte

134.3.86.14: /* Arrays */

2023-01-08T08:21:13Z

Arrays

2023-01-08T08:20:09Z

Array mit repeating / count füllen

2022-12-21T20:18:56Z

2022-12-21T19:32:48Z

Arrays

2022-12-21T14:29:15Z

2022-12-21T14:25:14Z

2022-12-21T14:20:04Z

Multidimensionale Arrays

@@ Zeile 7: / Zeile 7: @@
 var symbolIndex = [0,1,2]
 var backgrounds = [Color.white,Color.green,Color.red]
 </syntaxhighlight>

@@ Zeile 11: / Zeile 11: @@
 === Array mit repeating / count füllen ===
 <syntaxhighlight lang="swift">
-var numbers = Array(repeating:0, count:9) // creates an Array with 9 elements initialised to 0
+var zeros = Array(repeating:0, count:9) // creates an Array with 9 elements initialised to 0
 var colors = Array(repeating: Color.black, count: 12) // 12 Elements initialised to Color.black
 </syntaxhighlight>

← Nächstältere Version		Version vom 21. Dezember 2022, 20:18 Uhr
Zeile 101:		Zeile 101:

	Remarks: Same markup rules for 3 and N dimensional arrays.		Remarks: Same markup rules for 3 and N dimensional arrays.
		+
		+	== Array Funktionen ==
		+	=== Shuffle ===
		+	<syntaxhighlight lang="swift">
		+	var numbers = [1, 2, 3, 4, 5]
		+
		+	numbers.shuffle()
		+	print(numbers) // [5, 3, 1, 4, 2] (the order of the elements is randomized)
		+	</syntaxhighlight>

@@ Zeile 9: / Zeile 9: @@
 </syntaxhighlight>
 <syntaxhighlight lang="swift">
 backgrounds[0] = Color.white
 backgrounds[1] = Color.white
-// NOTE: We can use a map function on each element of the array instead:
+backgrounds[2] = Color.white
 backgrounds = self.backgrounds.map({ _ in Color.white})
@@ Zeile 18: / Zeile 29: @@
 self.symbolIndex = self.symbolIndex.map({
    _ in Int.random(in: 0...self.symbols.count-1)
 })
 </syntaxhighlight>

← Nächstältere Version		Version vom 21. Dezember 2022, 14:25 Uhr
Zeile 1:		Zeile 1:
		+	== Arrays ==
		+	<syntaxhighlight lang="swift">
		+	var symbols = ["apple","coin","cherry"]
		+	var symbolIndex = [0,1,2]
		+	var backgrounds = [Color.white,Color.green,Color.red]
		+	</syntaxhighlight>
		+
		+	<syntaxhighlight lang="swift">
		+	backgrounds[0] = Color.white
		+	backgrounds[1] = Color.white
		+	// NOTE: We can use a map function on each element of the array instead:
		+	backgrounds = self.backgrounds.map({ _ in Color.white})
		+
		+	// random values
		+	self.symbolIndex = self.symbolIndex.map({
		+	_ in Int.random(in: 0...self.symbols.count-1)
		+	})
		+
		+	</syntaxhighlight>
		+
	== Multidimensionale Arrays ==		== Multidimensionale Arrays ==
	https://stackoverflow.com/questions/25127700/two-dimensional-array-in-swift		https://stackoverflow.com/questions/25127700/two-dimensional-array-in-swift

@@ Zeile 10: / Zeile 10: @@
 OR:
+<syntaxhighlight lang="swift">
 // 2 dimensional array of arrays of Ints
 var arr: [[Int]] = []
 OR if you need an array of predefined size (as mentioned by @0x7fffffff in comments):
 // 2 dimensional array of arrays of Ints set to 0. Arrays size is 10x5
 var arr = Array(count: 3, repeatedValue: Array(count: 2, repeatedValue: 0))
@@ Zeile 21: / Zeile 23: @@
 // ...and for Swift 3+:
 var arr = Array(repeating: Array(repeating: 0, count: 2), count: 3)
 Change element at position
+<syntaxhighlight lang="swift">
 arr[0][1] = 18
+</syntaxhighlight>
 OR
+<syntaxhighlight lang="swift">
 let myVar = 18
 arr[0][1] = myVar
 Change sub array
+<syntaxhighlight lang="swift">
 arr[1] = [123, 456, 789]
+</syntaxhighlight>
 OR
+<syntaxhighlight lang="swift">
 arr[0] += 234
+</syntaxhighlight>
 OR
+<syntaxhighlight lang="swift">
 arr[0] += [345, 678]
@@ Zeile 50: / Zeile 54: @@
    [0, 0]
+]
 So be aware that sub arrays are mutable and you can redefine initial array that represented matrix.
 Examine size/bounds before access
+<syntaxhighlight lang="swift">
 let a = 0
 let b = 1
@@ Zeile 60: / Zeile 65: @@
      println(arr[a][b])
+}
 Remarks: Same markup rules for 3 and N dimensional arrays.