SwiftyXMLParser | Simple XML Parser implemented in Swift | Parser library

This question is a quite interesting topic in Swift language.

In other programming languages, it is closed to operator overloading whereas in Swifty terms, it is called Custom Operators. Swift has his own standard operator, but we can add additional operator too. Swift has 4 types of operators, among them, first 3 are available to use with custom operators:

• Infix: Used between two values, like the addition operator (e.g. 1 + 2)
• Prefix: Added before a value, like the negative operator (e.g. -3).
• Postfix: Added after a value, like the force-unwrap operator (e.g. objectNil!)
• Ternary: Two symbols inserted between three values.

Custom operators can begin with one of the ASCII characters /, =, -, +, !, *, %, <, >, &, |, ^, ?, or ~, or one of the Unicode characters.

New operators are declared at a global level using the operator keyword, and are marked with the prefix, infix or postfix modifiers:

Here is a sample example in the playground[Swift 4].