31:[] 2f:{"title":"Staying out of the loop with recursion","cells":[{"id":0,"value":"slide.md`# Staying out of the loop with recursion`","pinned":false,"hidden":false,"mode":"ojs"},{"id":35,"value":"slide.html`

Iteration

imperative

looping

stateful

Recursion

functional

self-referential

stateless

\n`","pinned":false,"hidden":false,"mode":"ojs"},{"id":30,"value":"slide.md`# Iteration isn't functional\n\n## use recursion instead\n`","pinned":false,"hidden":false,"mode":"ojs"},{"id":40,"value":"slide.md`# Iteration:\n\n\\`\\`\\`js\nfunction sum (numbers) {\n let total = 0;\n for (i = 0; i < numbers.length; i++) {\n total += numbers[i];\n }\n return total;\n}\n\nsum([0,1,2,3,4]); // 10\n\\`\\`\\`\n`","pinned":false,"hidden":false,"mode":"ojs"},{"id":43,"value":"slide.md`# Recursion:\n\n\\`\\`\\`js\nfunction sum (numbers) {\n if (numbers.length === 1) {\n // base case\n return numbers[0];\n } else {\n // recursive case\n return numbers[0] + sum(numbers.slice(1));\n }\n}\n\nsum([0,1,2,3,4]); // 10\n\\`\\`\\`\n`","pinned":false,"hidden":false,"mode":"ojs"},{"id":50,"value":"// slide.md`# OK, let's do it! \n\n// ### [=> Exercise: Iteration vs. Recursion](https://observablehq.com/d/89173eb291a624f6?collection=@anjana/functional-javascript-first-steps)\n// `","pinned":false,"hidden":false,"mode":"ojs"},{"id":46,"value":"","pinned":false,"hidden":false,"mode":"ojs"},{"id":5,"value":"md`-----\n\n#### Appendix: Slideshow helpers`","pinned":false,"hidden":false,"mode":"ojs"},{"id":9,"value":"import { slide, notes, style, keyBindings } from '@visnup/slides'","pinned":false,"hidden":false,"mode":"ojs"},{"id":11,"value":"import { customStyle } from '5b88a355d27605eb'","pinned":false,"hidden":false,"mode":"ojs"},{"id":25,"value":"customStyle","pinned":true,"hidden":false,"mode":"ojs"},{"id":15,"value":"keyBindings","pinned":true,"hidden":false,"mode":"ojs"}],"files":"$W31","stdlib":"1","titling":"auto"}