One interesting feature in Golang is the use of the _ (Blank Identifier).
myValue, _, _ := myFunction()
This allows you to ignore the 2nd and 3rd return values of a function.
Can this same concept be applied in JavaScript?
function myFunction() {
return [1,2,3]
}
// Something similar to this
const [first, _, _] = myFunction()
When you destructure data, you have the ability to remove any unused items without assigning them to a variable. Additionally, trailing array items can be left without commas, simply ending the array declaration where the last needed item is:
function myFunction() {
return [1,2,3]
}
const [first] = myFunction()
const [, second] = myFunction()
const [,, third] = myFunction()
console.log(first, second, third);For those who have landed here through a Google search: It seems that JavaScript does not provide a built-in way to handle empty function arguments.
For example, turning foo(one, two, three) into foo(_, _, three) if one and two are not utilized in the function.
Instead, you can use foo({}, {}, three).
It appears that everything can be passed as an anonymous object in this case. However, the extent to which this is completely free of side effects remains uncertain.
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