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How to return the response from an asynchronous call

I have a function foo which makes an asynchronous request. How can I return the response/result from foo? I am trying to return the value from the callback, as

Xamarin.Forms Tracking location works in Android 10 but not 11

I was following along with Gerald Versluis's tutorial on location tracking on Android. https://www.youtube.com/watch?v=Q_renpfnbk4&t=1995s&ab_channel=Ge

Apps Script: Fill template with rows of data from Google Sheet. HOW to make it more dynamic?

I have a script which replaces every {{Keyword}} in a Google Doc template with data from each row in a Google Sheet. (Example sheet below) Name Address City Do

How do I check if a variable is an array in JavaScript?

How do I check if a variable is an array in JavaScript? if (variable.constructor == Array)

Is there a Safari equivalent for scroll-behavior: smooth;?

I'm working on a single page portfolio which is navigated using a top-mounted navigation bar using href's. I use scroll-behavior: smooth; in my head's CSS and t

create wordpress submenu using haslink(without reload page) with a callback