High Quality Content by WIKIPEDIA articles! In computing, an anonymous function is a function (or a subroutine) defined, and possibly called, without being bound to an identifier. Anonymous functions originate in the work of Alonzo Church in his invention of the lambda calculus in 1936 (prior to electronic computers), in which all functions are anonymous. The Y combinator can be utilised in these circumstances to provide anonymous recursion, which Church used to show that some mathematical questions are unsolvable by computation. (Note: this result was disputed at the time, and one year later his student Alan Turing provided a proof that was more generally accepted.)

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