remove a substring from a string at a specific index in swift

Here's an example code using Swift's built-in range function to remove a substring from a string at a specific index:


main.swift
var myString = "Hello, World!"
let index = myString.index(myString.startIndex, offsetBy: 7) // set the starting index for the substring
myString.removeSubrange(index..<myString.endIndex) // remove the substring from the starting index to the end of the string
print(myString)
276 chars
5 lines

This code will remove the substring "World!" from the original string, resulting in "Hello," being printed to the console.

Note that this example code modifies the original string. If you need to keep the original string intact, you can create a new string by using the prefix method to get the portion of the string before the index and the suffix method to get the portion of the string after the index:


main.swift
let myString = "Hello, World!"
let index = myString.index(myString.startIndex, offsetBy: 7) // set the starting index for the substring
let newString = "\(myString.prefix(upTo: index))\(myString.suffix(from: myString.index(after: index)))" // create a new string without the substring at the specified index
print(newString)
325 chars
5 lines

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