Autovivification - Wikipedia
In the Perl programming language, autovivification is the automatic creation of new arrays and hashes as required every time an undefined value is dereferenced. Perl autovivification allows a programmer to refer to a structured variable, and arbitrary sub-elements of that structured variable, without expressly declaring the existence of the variable and its complete structure beforehand.[1] In con
Flag semaphore - Wikipedia
This article is about the system to transmit information by hand-held devices. For the mechanical system using signalling towers, see Optical telegraph. A US Navy crewman signals the letter 'U' using flag semaphore during an underway replenishment exercise (2005) Flag semaphore (from the Ancient Greek σῆμα (sêma) 'sign' and -φέρω (-phero) '-bearer'[1]) is a semaphore system conveying information a
π-calculus - Wikipedia
In theoretical computer science, the π-calculus (or pi-calculus) is a process calculus. The π-calculus allows channel names to be communicated along the channels themselves, and in this way it is able to describe concurrent computations whose network configuration may change during the computation. The π-calculus has few terms and is a small, yet expressive language (see § Syntax). Functional prog
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Competitive learning - Wikipedia
call-with-current-continuation - Wikipedia