I have to multiply the sign of all elements in an array. For example 1: Ex2: Ex3: And here is my solution However, the output of ex3 cal([1, -2, 3, 0]) is -0. I’ve already thought about adding one more condition like this And obviously, It looks ugly. Is there a more elegant way to resolve that? Answer …
Tag: arrays
mapping the data does not work for me react js/axios
I deleted the map in the return because it doesn’t work. I get a error like: map is not a function. I hope someone can help me.. This is the code: This is the response from the console.log: {“data”:{“proposals”:[{“id”:”0xc1d3a777729a2f595be7723b22f406b9bba68d4cf…
Group GeoJson features by property value in JavaScript
I have a list of geojson features that each have an asset ID in their properties. I want to manipulate the geojson so I am left with only a single feature per asset ID, with the properties from each feature found added to the feature properties. As an example, the following geojson has 4 features; 2 of them h…
Lodash typescript – Combining multiple arrays into a single one and perform calculation on each
I have a Record<string, number[][]> and trying to perform calculation over these values. An example input: For each key, and for the specific year I want to do the following For this I have been playing around with lodash/fp. is there a way to somehow pass the inputs and iterate over them, and somehow g…
How to convert for of loop into a for loop to solve the ESLint error
How do I convert a for of loop into a for loop? This is so that I can avoid/ solve the eslint error message.I have tried googling, but the solution I am getting is to disable/configure eslint. Help me understand what I’m missing. here is the error message. ” error iterators/generators require rege…
For loop only returns last number [closed]
Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers. This question was caused by a typo or a problem that can no longer be reproduced. While similar questions may be on-topic here, this one was resolved in a way less likely to help future readers. Closed 8 m…
How to filter one array with another array values and return a key value of the first array
I have 2 arrays with current week dates and investments with value and date. I want to return an array with the values that have corresponding dates between the 2 arrays. My non-working solution is: When what I need is: [0.77, 1.50, 0.80, 1.00, 0.77, 0.79] Probably the filter inside the map is not the best op…
how to store the value of a key for a object and pass it to the function which is a value of another key in the same object
In the above object inside dateFilter for value i am using a calculateAverage function to get the value i need to pass the same value as parameter for calculatePercentage which is a value for percentage key in the same object how to store the calculateAverage at dateFilter and pass it to calculatePercentage s…
Pushing array into an array of array in TS
I am coming from Python, and am not entirely familiar with the ‘proper’ JS/TS way of doing things. I am looping through the elements of a set, and I am pushing lists of some of the elements onto a 2D array. I am getting the following error TypeError: Cannot read properties of undefined (reading &#…
Sum all similar keys in an array with a random number of keys and array items
My Array (can have several items, and there can be multiple ‘keys’ other than ‘companyName’): randomKey and randomKey2 are only examples. The key names can be anything and there can be 1 or more in each array item. Expected results: companyName: ‘X’ is a fixed value, and al…