print(
    table: ["Good", "Very Good", "Happy", "Cool!"], 
    header: ["Wed", "Thu", "Fri", "Sat"]
)

//Result
+----+---------+-----+-----+
|Wed |Thu      |Fri  |Sat  |
+----+---------+-----+-----+
|Good|Very Good|Happy|Cool!|
+----+---------+-----+-----+

print(
    table: [
        "1": 1, 
        2: "Hellow?", 
        1.2: 0, 
        "I'm Table": [1, 2, 3, 2, 1]], 
    header: [
        "key", "value"
    ]
)

//Result
+---------+---------------+
|key      |value          |
+---------+---------------+
|2        |Hellow?        |
+---------+---------------+
|I'm Table|[1, 2, 3, 2, 1]|
+---------+---------------+
|1.2      |0              |
+---------+---------------+
|1        |1              |
+---------+---------------+

print(table: [
    [1, 2, 3], 
    [4, 5, 6], 
    [7, 8, 9, 10]
])

//Result
+-+-+-+--+
|1|2|3|  |
+-+-+-+--+
|4|5|6|  |
+-+-+-+--+
|7|8|9|10|
+-+-+-+--+

//Standard print
func print(
    _ items: Any..., 
    separator: String = " ", 
    terminator: String = "\n"
)

//Table print
@discardableResult func print(
    table data: Any,
    header: [String]? = nil,
    distribution: TableSpacing = .fillProportionally,
    terminator: String = ""
) -> String

let mirrorObj = Mirror(reflecting: data)

//Check one dimensional array
if mirrorObj == [Any].self {
}
//Check two dimensional array
else if mirrorObj == [[Any]].self {
}
//Check Dictionary
else if mirrorObj == [AnyHashable: Any].self {
}

private func tableInfo<Item: LosslessStringConvertible>(
data: [Item]) -> (
    numberOfItem: Int,
    maxWidth: Int,
    widthInfo: [Int: Int]
    ) {
    let stringData = data.map { String($0) }
    let maxWidth = stringData.sorted { 
        $0.count > $1.count 
    }.first!.count
    var maxWidthDict: [Int: Int] = [:]
    for (index, item) in stringData.enumerated() {
        maxWidthDict[index] = item.count
    }
    return (
        numberOfItem: stringData.count, 
        maxWidth: maxWidth, 
        widthInfo: maxWidthDict
    )
}

//Declaration of print function by Apple
func print<Target>(
    _ items: Any..., 
    separator: String = " ", 
    terminator: String = "\n", 
    to output: inout Target
) where Target : TextOutputStream

//https://github.com/apple/swift/blob/master/test/stdlib/Print.swift
PrintTests.test("StdoutUTF8") {
  expectPrinted("µ", "\u{00B5}")
}

PrintTests.test("Varargs") {
  var s0 = ""
  print("", 1, 2, 3, 4, "", separator: "|", to: &s0)
  expectEqual("|1|2|3|4|\n", s0)

  var s1 = ""
  print(1, 2, 3, separator: "\n", terminator: "===", to: &s1)
  expectEqual("1\n2\n3===", s1)

  var s2 = ""
  print(4, 5, 6, separator: "\n", to: &s2)
  expectEqual("4\n5\n6\n", s2)

  var s3 = ""
  print("", 1, 2, 3, 4, "", separator: "|", to: &s3)
  expectEqual("|1|2|3|4|\n", s3)
}

func test_1DArray_Of_String_with_header() {
  let output = print(
  table: ["Good", "Very Good", "Happy", "Cool!"],
  header: ["Wed", "Thu", "Fri", "Sat"]
  )
  let expected = """
  +----+---------+-----+-----+
  |Wed |Thu      |Fri  |Sat  |
  +----+---------+-----+-----+
  |Good|Very Good|Happy|Cool!|
  +----+---------+-----+-----+

  """
  XCTAssertEqual(output, expected)
}

func test_2DArray_Of_Int_With_Different_Columns() {
    let output = print(
      table: [
        [1, 2, 3], 
        [4, 5, 6], 
        [7, 8, 9, 10]
      ]
    )
  let expected = """
  +-+-+-+--+
  |1|2|3|  |
  +-+-+-+--+
  |4|5|6|  |
  +-+-+-+--+
  |7|8|9|10|
  +-+-+-+--+

  """
  XCTAssertEqual(output, expected)
}

In this episode: WWDC goes WFH, Swift gets some inspiration from JavaScript, and we review your awesome Breathe app submissions.

• WWDC is online: https://developer.apple.com/news/?id=03132020a
• Swift Argument Parser: https://github.com/apple/swift-argument-parser
• SE-0279 Multiple Trailing Closures: https://github.com/apple/swift-evolution/blob/master/proposals/0279-multiple-trailing-closures.md
• Push notifications may now be user for advertising (with consent)
• Paul’s pick: Table, by Shawn Baek – https://github.com/ShawnBaek/Table
• Erica’s pick: Slideas – https://www.slideas.app/
• Challenge: Recreate the Breathe app animation from watchOS – https://github.com/twostraws/SwiftOverCoffee