30-seconds-of-code/snippets/rightSubstrGenerator.md

title, tags, cover, author, firstSeen

title	tags	cover	author	firstSeen
Right substring generator	string,generator	blog_images/boutique-home-office-2.jpg	chalarangelo	2022-07-25T05:00:00-04:00

Generates all right substrings of a given string.

• Use String.prototype.length to terminate early if the string is empty.
• Use a for...in loop and String.prototype.slice() to yield each substring of the given string, starting at the end.

const rightSubstrGenerator = function* (str) {
  if (!str.length) return;
  for (let i in str) yield str.slice(-i - 1);
};

[...rightSubstrGenerator('hello')];
// [ 'o', 'lo', 'llo', 'ello', 'hello' ]