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Peter Ajuzie
Full Stack JavaScript Techdegree Student 2,719 PointsAn alternative: functions as parameters
Please would this code below serve as a viable alternative to the functional expression method for passing functions as parameters?
// const say = something => console.log(something);
const exec = (func, arg) => func(arg);
// THIS QUESTION REFERS TO THIS CODE BELOW
let say; // Would not work with const so we'll switch to let and pass that function on line 1 directly into the function below as an argument
exec(say = something => console.log(something), 'Hi, there');
1 Answer
Steven Parker
229,644 PointsI wouldn't call this "alternative" as it is the functional expression method. You just substituted the "arrow function" form for the convention form to create the function expression. And yes, the two forms are interchangeable, as long as you observe the restrictions of arrow functions.
But if you're not going to define "say" in advance, you could just pass the function expression in by itself, as shown in the latter part of the video:
exec(something => console.log(something), 'Hi, there');
And if you had a need to use the function later, it would make for more readable code to define it outside the call.
Peter Ajuzie
Full Stack JavaScript Techdegree Student 2,719 PointsPeter Ajuzie
Full Stack JavaScript Techdegree Student 2,719 PointsThank you.