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JavaScript関数型プログラミング 複雑性を抑える発想と実践法を学ぶ impress top gearシリーズ Kindle版

https://www.amazon.co.jp/gp/product/B072JVPFL4/ref=ppx_yo_dt_b_d_asin_title_o01?ie=UTF8&psc=1
https://www.webprofessional.jp/functional-programming-with-ramda/

> var R = require('ramda')

> function isString (test) {
...     return R.is(String, test);
... }
undefined
>
> var result = isString('foo'); //=> true
undefined
> result
true

最近関数言語に興味がある

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