Split String with varied amount of input data-CodePudding

I have a string that looks like this:

https://product/000000/product-name-type-color

I used a split to separate this strings, but Im having problems because the link can come without the description or the id

guard let separateLink = deeplink?.split(separator: "/") else { return }

let linkWithoutProductDetails = "\(separateLink[0] ?? "")//\(separateLink[1] ?? "")/\(separateLink[2] ?? "")"

When the link comes only https://product/ Im getting Fatal error: Index out of range even using the Optionals and String Interpolation, how can i guarantee that independently of the quantity of informations in my link the code wont break

CodePudding user response：

You should check the number of path components. However, ideally you should use the URL functions instead of manipulating the link as a String:

if var url = URL(string: "https://product/000000/product-name-type-color") {
    let pathComponents = url.pathComponents

    // "product" is not a path component, it's the host.
    // Path components are "/", "000000" and "product-name-type-color"
    if pathComponents.count > 2 {
        url = url.deletingLastPathComponent()
    }

    print(url)
}

CodePudding user response：

To split a string with varied amount of input data, you can use the split() function in Python. This function takes a delimiter as an argument, and returns a list of substrings that are delimited by the specified delimiter.

For example:

data = "apple,banana,orange" fruits = data.split(",") print(fruits)

This will output the following list: ['apple', 'banana', 'orange']

You can also specify a maximum number of splits to be performed by passing an integer as a second argument to the split() function. For example:

data = "apple,banana,orange,mango" fruits = data.split(",", 2) print(fruits)

This will output the following list: ['apple', 'banana', 'orange,mango'], as the split is only performed twice.

Note that the split() function is only effective for splitting strings based on a fixed delimiter. If the input data has a variable number of delimiters, you may need to use a different approach to split the string.