Define and chain Closures with Inputs and Outputs

Related tags

Event swift functional-programming functions chain state closure thenable then scope closures
Overview

Closure

Define and chain Closures with Inputs and Outputs

Examples

No Scoped State

let noStateCount = Closure<String, String> { text in
  String(repeating: text, count: 4)
}
.then { string in
  Int(string) ?? 0
}


XCTAssertEqual(noStateCount.method("5"), 5555)
XCTAssertEqual(noStateCount.method("5"), 5555)
XCTAssertEqual(noStateCount.method("5"), 5555)

Scoped State

let stateCount: Closure<String, Int> = Closure<String, String> {
  var count = 1
  
  return { text in
    defer {
      count += 1
    }
    
    return String(repeating: text, count: count)
  }
}
.then { string in
  Int(string) ?? 0
}

XCTAssertEqual(stateCount.method("5"), 5)
XCTAssertEqual(stateCount.method("5"), 55)
XCTAssertEqual(stateCount.method("5"), 555)
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Releases(0.1.0)

  • 0.1.0(Oct 5, 2021)

    Closure 0.1.0

    Define and chain Closures with Inputs and Outputs

    Examples

    No Scoped State

    let noStateCount = Closure<String, String> { text in
  String(repeating: text, count: 4)
}
.then { string in
  Int(string) ?? 0
}


XCTAssertEqual(noStateCount.method("5"), 5555)
XCTAssertEqual(noStateCount.method("5"), 5555)
XCTAssertEqual(noStateCount.method("5"), 5555)

    Scoped State

    let stateCount: Closure<String, Int> = Closure<String, String> {
  var count = 1
  
  return { text in
    defer {
      count += 1
    }
    
    return String(repeating: text, count: count)
  }
}
.then { string in
  Int(string) ?? 0
}

XCTAssertEqual(stateCount.method("5"), 5)
XCTAssertEqual(stateCount.method("5"), 55)
XCTAssertEqual(stateCount.method("5"), 555)
    Source code(tar.gz)
    Source code(zip)
Owner
Zach Eriksen
iOS Developer for From Now On LLC; Proud member of oneleif; I 🧡 Swift; Husband; Supporter for all
Zach Eriksen
GitHub
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