See: Golang Variadic function

Snippet from Wikipedia: Variadic function

In mathematics and in computer programming, a variadic function is a function of indefinite arity, i.e., one which accepts a variable number of arguments. Support for variadic functions differs widely among programming languages.

The term variadic is a neologism, dating back to 1936/1937. The term was not widely used until the 1970s.

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