remove a substring from a string in swift

To remove a substring from a string in Swift, you can use the replacingOccurrences(of:with:) method on a String object. The replacingOccurrences(of:with:) method takes two arguments: the substring you want to remove, and the replacement string (which in this case is an empty string, "").

Here's an example code snippet:

main.swift
var myString = "Hello, world!"
let substringToRemove = ", world"
myString = myString.replacingOccurrences(of: substringToRemove, with: "")
print(myString) // Output: "Hello!"
175 chars
5 lines

In this example, we define a myString variable with the value "Hello, world!". We also define a substringToRemove constant with the value ", world". We then call the replacingOccurrences(of:with:) method on myString and pass in substringToRemove as the first argument and an empty string as the second argument. This replaces the substringToRemove with an empty string, effectively removing it from the original string. Finally, we print out the updated myString.