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TypeScriptでFizzBuzzしてみた

Posted at

TypeScriptでFizzBuzzがしたいと思い立ち、やってみた。

環境設定

npm init
npm install typescript -s
npm run tsc -- --init
npm install lodash
npm install --save @types/lodash

関数型で書きたいのでlodashもインストール。

実装

import * as _ from "lodash";
  
const ori = _.range(1,100)
const ret = ori.map(fizzbuzz)

ret.map((val)=>console.log(val))

function fizzbuzz(val: number) {
	if((val % 3 == 0) && (val % 2 == 0)){
		return "fizzbuss"
	}else if(val % 3 == 0){
		return "fizz"
	}else if(val % 2 == 0){
		return "buzz"
	}else{
		return String(val)
	}
}

関数型では変数はconstで作れ、とのことなのでconstで定義。

実行

tsc app.ts
node app.js

所感

  • 以下の辺りが、もっときれいに書ける気がするが知識不足
    const ret = ori.map(fizzbuzz)
    ret.map((val)=>console.log(val))

  • console.logを使用すると非純粋になってしまうので、
    モナド?を使いたいが知識不足

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