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Elvis operator - Wikipedia In certain computer programming languages, the Elvis operator, often written ?:, or or ||, is a binary operator that returns its first operand if that operand evaluates to a true value, and otherwise evaluates and returns its second operand. This is identical to a short-circuit or with "last value"....

Multicast - Wikipedia In computer networking, multicast is group communication[1] where data transmission is addressed to a group of destination computers simultaneously. Multicast can be one-to-many or many-to-many distribution.[2] Multicast should not be confused with physical layer point-to-multipoint communication.