| " Summary: " | |
| ` | |
| I recently had an aha! moment. I finally understood what mapping functions are in Functional Programming, | |
| *and* I finally understood why JS had made learning the FP meaning confusing. | |
| ` | |
| ` this makes it obvious "map" means in Functional Programming` | |
| A.map(add1)(myArray) | |
| ` this makes it confusing: ` |
| // Typescript lets you put constraints on assignment -- cool | |
| // - I don't know what this feature is officially called and can't find it. | |
| // for example, telling the IDE that a constant should be "even" | |
| type even = 2 | 4 | 6; | |
| const a = 2; | |
| const b: even = 2; | |
| const c: even = 4; | |
| const d: even = 3; // error: constraint violation | |
| // you can assert types, this is different! |
| export const caller = async ( | |
| event: CallerEvent, | |
| context: ServerlessContext, | |
| callback | |
| ) => { | |
| // START ur code | |
| logger.info({ event, context }); | |
| const { collection, time } = event; | |
| const args = { | |
| collection, |
| import React from "react" | |
| import LinearProgress from "@material-ui/core/LinearProgress" | |
| import throttle from "lodash.throttle" | |
| import ScrollManager from "./ScrollManager" | |
| import { Id, Result } from "../../modules/Stores/Search/searchInterfaces" | |
| import Masonry from "./Masonry" | |
| import { Typography } from "@material-ui/core" | |
| interface Props { |
This chart shows a histogram of reported rat sightings in NYC between January 2010 and September 2014 grouped by borough. It's intended as a simple example to show how to create a time-based histogram using the stack layout in D3.js.
Data source: NYC Open Data