find the extension of a csv file in swift

To find the extension of a csv file in Swift, you can use the pathExtension property of a file URL. Here's an example:

main.swift
let fileURL = URL(fileURLWithPath: "/path/to/file.csv")
let fileExtension = fileURL.pathExtension

if fileExtension == "csv" {
  print("The file is a CSV file")
} else {
  print("The file is not a CSV file")
}
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In this example, we first create a URL object representing the file path. We then extract the file extension using the pathExtension property of the URL. Finally, we check if the file extension is "csv" to determine if the file is a CSV file.