I've implemented multiple functions structured like this:
this.something = function (which) {
// Can be one or many.
if (!Array.isArray(which)) {
// Single input case.
doSomething(which);
} else {
// Multiple inputs case.
which.forEach(function (thing) {
// Utilizing recursion
something(thing);
});
}
};
Any suggestions for a more concise approach?
this.action = function(selected) {
(Array.isArray(selected) ? selected : [selected]).forEach(function(element) {
performAction(element);
});
};
Although it's not something I typically prefer, it's a common approach in coding:
// A function that processes values either as a single parameter or within an array
var doSomething(x) {
if (Array.isArray(x)) {
x.forEach(doSomething);
} else {
console.log(x);
}
}
You can separate this logic from doSomething and encapsulate it in a utility method like this:
var ifArrayForEach = f => x => Array.isArray(x) ? x.forEach(f) : f(x);
var doSomething = x => console.log(x);
var doSomethingArrayOrNot = ifArrayForEach(doSomething);
doSomethingArrayOrNot("Hello world");
doSomethingArrayOrNot(["Hello", "world"]);Once again, it may not be my preferred approach, but there are times when it can prove useful. Personally, I would opt to check before calling the function. Ultimately, you need to understand the data you're working with at some point anyway...
Uncertain if this aligns with what you're seeking in terms of tidiness, but one approach could be to use a try/catch block.
try {
which.forEach(function (thing) {
something(thing);
});
} catch (e) {
if (e instanceof TypeError) {
doSomething(which);
}
}
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