JavaScript Array filter method 

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Thank you for introducing the bitwise filter concept, love it.

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Hi Steve! i'm wondering if there's a reason you're using the traditional function as opposed to an arrow function? :)

Will the binary method operate if we'd like to extract the prime numbers?

Can you use arrow syntax, like this? let smallnumbers = numbers.filter(item => num < breakpoint);

Damn, bitwise operators... cool.

Thanks Sir. Suppose I have script like this: var leaveFilter = data.filter(data => {return data[1 == "Annual Leave" || data[1] == "Vacation leave" || data[1] == "Sick" || data[1] == "Important leave"}); How if I want make some iteration, or loop perhaps, so I just have to make that filter in array like this: filters = [ "Annual Leave", "Vacation leave", "Sick", "Important leave"] Which later I want that I could use that filters variable to do some iteration/loop in filter method above. Could you help to break this problem?

Hey Steve, I was wondering if you could answer a question I have. In array methods like filter, map etc, the third parameter to the callback function is the array itself but you already have access to the array as you are using the method with it. For example, let copiedArray = arr.filter((item, index, array) => arr[index] === item); copiedArray will now contain everything arr contained. My question is, when would we need to access the array using the third parameter?

If you used the modula operator for odd, how would you write the return statement?

Why can't we leave out the curlies in this case? There's only 1 line of code in the filter function. oldAges = Ages.filter (function (a) { return true } ) // WORKS oldAges = Ages.filter (function (a) return true ) // FAILS

ASMR

Why does this require semi-colon? oldAges = Ages.filter ((age) => {return age > 50; }) // WORKS oldAges = Ages.filter ((age) => {return age > 50 }) // FAILS

Why do all of these give "checkOld is not defined"? const oldAges = Ages.filter (checkOld) checkOld = age => age > 50; // "checkOld is not defined" checkOld = age => ( age > 50 ) // "checkOld is not defined" checkOld = age => {return age > 50 } // "checkOld is not defined" It seems you gave an overloaded answer in the vid linked below, line 31. But you chained two arrow fx, so now i have to try and break it down to just one. Would be super-helpful if at some point before this you showed how to do array fx with just a single arrow fx. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-WnP_ssWDBWU.html thx!