[swiftlint] Fix violation: trailing_whitespace

Author: jawwad

Array2D/Array2D.playground/Contents.swift

@@ -7,13 +7,13 @@ public struct Array2D<T> {
   public let columns: Int
   public let rows: Int
   fileprivate var array: [T]
-  
+
   public init(columns: Int, rows: Int, initialValue: T) {
     self.columns = columns
     self.rows = rows
     array = .init(repeating: initialValue, count: rows*columns)
   }
-  
+
   public subscript(column: Int, row: Int) -> T {
     get {
       precondition(column < columns, "Column \(column) Index is out of range. Array<T>(columns: \(columns), rows:\(rows))")

Array2D/Array2D.swift

@@ -7,13 +7,13 @@ public struct Array2D<T> {
   public let columns: Int
   public let rows: Int
   fileprivate var array: [T]
-  
+
   public init(columns: Int, rows: Int, initialValue: T) {
     self.columns = columns
     self.rows = rows
     array = .init(repeating: initialValue, count: rows*columns)
   }
-  
+
   public subscript(column: Int, row: Int) -> T {
     get {
       precondition(column < columns, "Column \(column) Index is out of range. Array<T>(columns: \(columns), rows:\(rows))")