Lets say we have an array of functions Is there a way to funcArray.reduce() and have all three functions apply on the string using reduce? Answer Compose is an HOC, which means it takes function and returns function. Trick is to decide when to execute the functions. Here is a sample function that will work li…
Tag: reduce
Use reduce instead of nested for loops? [closed]
Closed. This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 3 months ago. Improve this question I’m trying to print out the multiplication table using js. Is …
How to count repeating value inside an array of object
Given the array of obj above, My goal is to get the total number of vehicle in each key. Note: if the vehicle_name is repeated it should only count as 1. Expected Output: Explanation: The count of key a => is 2 because although it have 4 vehicles but Toyota is repeated so it only count as 1. Same goes
How to group according to date{ the key in each object is the day – from the first day of the month untill the current date}
Given the array above, my goal is to return an array of object that are group according to date(On Rent). But first I need to get the start of the month (for example this month is september, and also the current date of this month so for example Sept 25) so my final output should be like this Also I
How to convert an array with one object and multiple keys into an array of multiple objects using those keys and their values?
I have an array like so with a single object inside: I want to convert it so that every key-value pair (where the value is a number) in the object is in its own object like the following: Here, each key was assigned a new key called name, and the value for the original key was assigned a new key
How to proper use reduce() javascript/typescript
I try to solve task below with reduce() and actually the result is ok. But I don’t know how to use acc in reduce() instead of acc1 or indexMax. How to apply typescript to this task. The task: Find first word with max repeated letter count. For example rrrtygggg and ttbvfddjklyyyaseqq – the winner …
Javascript .reduce() tips? Is there a way to rename ‘undefined’ group?
I’m trying to understand the .reduce() function and the best way to go about the following. I’ve got the following code: I want to add a product with no ‘category’ property in it, and I want it pushed into a specific key rather than getting grouped in “undefined”, so I edit…
How to write this function with forEach?
I am trying to group the people by their age and as you can see, my code works with the reduce method. I managed to get this working but now I want to do the same with forEach method. Here’s my code: Answer Reduce accepts initial value that you update each iteration and return. So if you wish to use
Reduce nested array maximum values to a single array
I am trying to find a way to reduce the max values of specific positions/indexes within nested arrays into a single array. Given: const myArr = [[105,87,171],[113,192,87],[113,87,87],[113,87,87]] Expected return value: [113,192,171] Actual return value: [113,87,87] Using the following code, I’m getting …
Looping through and reducing nested array
I can’t seem to get my head around the array.reduce() function. I’ve got the following array: and I’m trying to get a result like below. I’m not sure how to go about multiplying the ingredient amounts with the item quantities: I’ve tried following the structure that was given her…