The “Rest Parameters” in ES6 are a very important feature for developers 🚀
Take a look:
Take a look:
— Rest parameters are a feature introduced in ES6 that allow a function to accept an indefinite number of arguments as an array. Rest parameters are denoted by three dots (~…~) followed by a parameter name, and can only appear as the last parameter in a function declaration.
— In this example, the `sum` function accepts any number of arguments, which are collected into an array called `numbers`. The `reduce` method is then used to sum up the values in the `numbers` array.
— The rest parameter can also be used with other parameters in a function declaration. In this case, the rest parameter must come last.
In this example, the `logNames` function accepts a `greeting` parameter followed by a rest parameter called `names`. The `join` method is then used to join the names in the `names` array with a comma and a space.
— Rest parameters can also be used with arrow functions.
In this example, the arrow function accepts a rest parameter called `numbers` and uses the `reduce` method to sum up the values in the `numbers` array.
Conclusion 💡
Rest parameters can be useful when you want to write a function that accepts an arbitrary number of arguments without having to specify each argument individually. They can also be used to create more flexible and reusable functions.
Rest parameters can be useful when you want to write a function that accepts an arbitrary number of arguments without having to specify each argument individually. They can also be used to create more flexible and reusable functions.
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