(Swift 3,4,5...) Update CSV File

Demonstrates how to read a CSV, update some cells, and save.

The Chilkat CSV library/component/class is freeware. The downloads for .NET, C++, Perl, Java, Ruby, and Python contain all of the Chilkat classes, some of which are freeware and some of which require licensing.

Chilkat Downloads for the Swift Programming Language MAC OS X (Cocoa) Objective-C/Swift Libs iOS Objective-C/Swift Libs

func chilkatTest() {
    // This example program loads a file (sample.csv)
    // that contains this content:
    // 
    // year,color,country,food
    // 2001,red,France,cheese
    // 2005,blue,"United States",hamburger
    // 2008,green,Italy,pasta
    // 1998,orange,Japan,sushi
    // 
    // The first row contains the column names.
    // This file is available at:
    // http://www.chilkatsoft.com/testData/sample.csv

    let csv = CkoCsv()!

    // Prior to loading the CSV file, indicate that the 1st row
    // should be treated as column names:
    csv.hasColumnNames = true

    // Load the CSV records from the file:
    var success: Bool
    success = csv.loadFile("sample.csv")
    if success != true {
        print("\(csv.lastErrorText!)")
        return
    }

    // Change "cheese" to "baguette"
    // ("cheese" is at row=0, column=3
    success = csv.setCell(0, col: 3, content: "baguette")

    // Change "blue" to "magenta"
    success = csv.setCell(1, col: 1, content: "magenta")

    // Write the updated CSV to a string and display:
    var csvDoc: String?
    csvDoc = csv.saveToString()
    print("\(csvDoc!)")

    // Save the CSV to a file:
    success = csv.saveFile("out.csv")
    if success != true {
        print("\(csv.lastErrorText!)")
    }


}