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Use the Swift template for the Swift swift-package-manager samples.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,4 +1,7 @@ | ||
| import Greeter | ||
| /* | ||
| * A simple hello world application. Uses a library to tokenize and join a string and prints the result. | ||
| */ | ||
| import Utilities | ||
|
|
||
| let greeter = Greeter() | ||
| greeter.sayHello() | ||
| let tokens = Util.split("Hello, World!") | ||
| print(Util.join(tokens)) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,51 @@ | ||
| /* | ||
| * A linked list implementation. | ||
| */ | ||
|
|
||
| public class LinkedList { | ||
| var head: Node? | ||
| var tail: Node? | ||
|
|
||
| public init() { | ||
| } | ||
|
|
||
| /* | ||
| * Adds the given string to this list. | ||
| */ | ||
| public func add(_ s: String) { | ||
| let n = Node(data: s) | ||
| if (head == nil) { | ||
| head = n | ||
| tail = head | ||
| } else { | ||
| tail!.next = n | ||
| tail = n | ||
| } | ||
| } | ||
|
|
||
| /* | ||
| * Returns the string at the given index. | ||
| */ | ||
| public func get(_ i: Int) -> String { | ||
| var n = head | ||
| var c = i | ||
| while (c > 0 && n != nil) { | ||
| n = n!.next | ||
| c = c - 1 | ||
| } | ||
| return n!.data | ||
| } | ||
|
|
||
| /* | ||
| * Returns the size of this list. | ||
| */ | ||
| public func size() -> Int { | ||
| var c = 0 | ||
| var n = head | ||
| while (n != nil) { | ||
| c = c + 1 | ||
| n = n!.next | ||
| } | ||
| return c | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,9 @@ | ||
| // A linked list node | ||
| class Node { | ||
| let data: String | ||
| var next: Node? | ||
|
|
||
| init(data: String) { | ||
| self.data = data | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,49 @@ | ||
| /* | ||
| * A class that provides several string utility functions. | ||
| */ | ||
| import List | ||
|
|
||
| public class Util { | ||
| /* | ||
| * Splits the given string into a list of tokens. Tokens are separated by one or more whitespace characters. | ||
| */ | ||
| public class func split(_ s: String) -> LinkedList { | ||
| let l = LinkedList() | ||
| var pos = s.startIndex | ||
| var current = String() | ||
| while (pos < s.endIndex) { | ||
| if (s[pos] != " ") { | ||
| current.append(s[pos]) | ||
| pos = s.index(after: pos) | ||
| } else { | ||
| if (!current.isEmpty) { | ||
| l.add(current) | ||
| } | ||
| current = String() | ||
| repeat { | ||
| pos = s.index(after: pos) | ||
| } while (pos < s.endIndex && s[pos] == " ") | ||
| } | ||
| } | ||
| if (!current.isEmpty) { | ||
| l.add(current) | ||
| } | ||
| return l | ||
| } | ||
|
|
||
| /* | ||
| * Joins the list of tokens into a string, separated by space characters. | ||
| */ | ||
| public class func join(_ l: LinkedList) -> String { | ||
| var i = 0 | ||
| var formatted = "" | ||
| while (i < l.size()) { | ||
| if (i > 0) { | ||
| formatted.append(" ") | ||
| } | ||
| formatted.append(l.get(i)) | ||
| i = i + 1 | ||
| } | ||
| return formatted | ||
| } | ||
| } |
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