claim: Sonny & Cher began in 1965.
evidence: Whitespace is an esoteric programming language developed by Edwin Brady and Chris Morris at the University of Durham -LRB- also developers of the Kaya and Idris programming languages -RRB- .. esoteric programming language. esoteric programming language. University of Durham. University of Durham. Kaya. Kaya ( programming language ). Idris. Idris ( programming language ). language. programming language. It was released on 1 April 2003 -LRB- April Fool 's Day -RRB- .. Its name is a reference to whitespace characters .. Unlike most programming languages , which ignore or assign little meaning to most whitespace characters , the Whitespace interpreter ignores any non-whitespace characters .. Only spaces , tabs and linefeeds have meaning .. spaces. Space character. tabs. Tab character. An interesting consequence of this property is that a Whitespace program can easily be contained within the whitespace characters of a program written in another language , except possibly in languages which depend on spaces for syntax validity such as Python , making the text a polyglot .. spaces. Space character. Python. Python ( programming language ). polyglot. polyglot ( computing ). language. programming language. The language itself is an imperative stack-based language .. language. programming language. imperative. imperative programming. stack-based language. stack-based language. The virtual machine on which the programs run has a stack and a heap .. virtual machine. virtual machine. heap. dynamic memory allocation. The programmer is free to push arbitrary-width integers onto the stack -LRB- currently there is no implementation of floating point numbers -RRB- and can also access the heap as a permanent store for variables and data structures .. heap. dynamic memory allocation. data structures. data structures