HQ9+-

An extension of HQ9++ with the - operator added for debugging purposes, by Melikamp.

- behaves differently based on what character(s) it follows:

• start of file: syntax error
• H: I/O error
• Q: infinite recurse
• 9: infinite loop
• -: decrement the accumulator
• + by itself: 1/0
• ++: virtual exception ("which itself is a method of an object of a new subclass of the generic superclass. In line with the best data-hiding principles, there is no way to intercept this exception.")

See also

• HQ9+
• HQ9++
• FHQ9+-

External resources

• Specification and implementation by Melikamp