I have this: I need to restructure it to this: the hard part is that the number of objects in each group is set using a variable (in this example the variable would be 4). How can I achieve this using Typescript/Javascript? Its driving me mad! Thanks Answer Use Array.reduce() You can run a .reduce() method on…
Tag: arrays
Access dynamic nested key in JS object
I have an array like [‘animals’, ‘cats’, ‘cute’, ‘fast’, ‘small’, …], and want to access nested keys of the object like Usually I would write object[‘animals’][‘cats’][‘cute’][‘fast’][‘small…
TypeScript enum to specific object
I have the following TypeScript enum: If I import it in my react application and console.log it, I will get the following object returned: How can I manipulate it, so that I get the following object returned? I tried it with const Lang = Object.keys(SupportedLanguages) and also with .map() but I did not get t…
How to convert array of objects into custom grouped array
I am trying to convert the data object to custom format This is my data which i want to convert This is what i want to acheive This is what i have tried till now even i tried to refer this Javascript group objects by property any suggestions would be helpful. Answer Assuming an array of objects as result set,
How do I append the number of a duplicate in an array as a prop of the array?
I have an array like [{type: car}, {type: van}, {type: truck}, {type: car}] I need to return an array that looks like: [{type: car, count: 1}, {type: van, count: 1}, {type: truck, count: 1}, {type: car, count: 2}] in the returned array, there is a new prop that stores what number of instance that value for ty…
Breaking Season Schedule into Weeks Without Repeating Teams Playing
I am working through generating a league schedule and I’m stuck on the part where, for any given week, a team should only play once. So far I have made sure that the correct number of games are played, and that each team plays their conference rivals 4 times, and their cross-conference opponents 2 times…
Find object in array with closest value
I need to get an object in an array by the closest value. Let me explain it by an example: I do get the object by using data.find((d)=> d.age === 60). But I do not get an result if the age is 61. In this case I would like to get the same object. For 64 the next object ({
Removing an object from array with splice() does not work as expected in React
I am creating input fields dynamically based on the number of object in my state array. Beside each field I am adding a button to remove that field. However, when the button is clicked it behaves in an unexpected way. Below is the visual demonstration: When I press “Remove Option” button on “…
Repeat String Infinitely – Return Count of Specific Character Within N Length of Infinite String – JavaScript
Trying to solve this HackerRank challenge: Lilah has a string, s, of lowercase English letters that she repeated infinitely many times. Given an integer, n, find and print the number of letter a’s in the first letters of Lilah’s infinite string. For example, if the string s = abcac and n = 10, the…
How to convert Map to array of object?
i’m trying to convert a Map into array of object Lets say I have the following map: let myMap = new Map().set(‘a’, 1).set(‘b’, 2); And I want to convert the above map into the following: Answer You could take Array.from and map the key/value pairs.