Substring made easy in swift with the aid of subscript

This shows a custom way to substring a string, It is often called ‘slicing’.

Subscript

This is a keyword simply use to set and retrieve values by index without the need to separate methods for setting and retrieval. It is a shortcut for accessing the member elements of a collection, list, or sequence.

It follows this procedure

string[start, end]

where,

start: The starting index of the substring. The character at this index is included in the substring.

end: The terminating index of the substring. The character at this index is included in the substring.

The implementation goes as follow:

Usage:

Output:

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