Paramètres de repos javascript par rapport à l'opérateur de diffusion
/**
* JS Spread and Rest operators:
* Two operators with the same syntax (...) but behave differently
*/
// Rest parameter: collects all remaining elements into an array.
function foo (...args) { console.log(args) }
foo(1,2,3,4,5,6) // Output: (6) [1,2,3,4,5,6]
// Spread operator: allows iterables to be expanded into single elements.
let arr = [1, 2, 3];
let arrCopy = [-1, 0, ...arr]; // spread the array into a list of parameters
// then put the result into a new array
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