find-ascii-value()

Step 1: Understand ASCII

ASCII is a standard that assigns a unique integer to every character used in communication and computers, like letters, digits, punctuation, etc.

In Swift, you will not find a built-in function to get the ASCII value of a character but you can use the Unicode values because ASCII is a subset of Unicode. The Unicode value of ASCII characters is the same as their ASCII value.

let character: Character = "A"
let asciiValue = character.unicodeScalars.first?.value
print(asciiValue)  // Output: 65

Step 2: Create a Function

Let's create a function 'findAsciiValue()' that takes a character as input and returns its ASCII/Unicode value.

func findAsciiValue(of character: Character) -> UInt32? {
  return character.unicodeScalars.first?.value
}

Step 3: Calling the Function

Now, you can call this function with any character to get its ASCII value.

if let asciiValue = findAsciiValue(of: "A") {
  print(asciiValue)  // Output: 65
}

Conclusion

The ASCII value of a character can easily be found in Swift by using Unicode scalars. Remember ASCII is a subset of Unicode, so all ASCII characters have the same value in Unicode. When you use the unicodeScalars property of a character and get the first value, you actually find the ASCII value of that character.

Here is the full implementation:

func findAsciiValue(of character: Character) -> UInt32? {
  return character.unicodeScalars.first?.value
}
if let asciiValue = findAsciiValue(of: "A") {
  print(asciiValue)  // Output: 65
}