Why Y? Deriving the Y Combinator in JavaScript
…and two practical applications… The Y Combinator is an important result in theoretical computer science.1 In this essay, after a brief review of the work we’ve already done on the Mockingbird, we’ll derive the Why Bird, known most famously as the Y Combinator. The why bird provides all the benefits of the mockingbird, but allows us to write more idiomatic JavaScript. We’ll see that one of the ben
今日こそ理解するHot / Cold @社内RxSwift勉強会
This document discusses hot and cold observables in RxSwift. It explains that subjects produce hot observables while operators produce cold observables. It provides examples of how cold observables resubscribe to source sequences while hot observables multicast their values to multiple observers. The document answers questions about the differences between hot and cold observable behavior.Read les
Forking and ContT (I)
Introduction This is the first article in a series about continuations, forking, and monad transformers. Next article. Motivation When using StateT or ReaderT over IO, we sometimes would like to fork and still remain in this “monadic context”, but alas: main = flip evalStateT (0 :: Int) $ do modify (+1) liftIO $ forkIO $ do s <- get -- ^ type error: we are in IO, -- no state to `get`. d'oh! print
Wandering Bose-Einstein condensate may lead to scalable quantum computer
A computer model of a Bose-Einstein condensate, showing some of its wave-like nature. Credit: NASA Although I often write about quantum computing, I mainly write about two forms: gate quantum computing and adiabatic quantum computing. There is a third, though, called quantum walks. Quantum walks are found in nature: a quantum walk is how the electron-transfer step in photosynthesis works. Now rese
リリース、障害情報などのサービスのお知らせ
最新の人気エントリーの配信
j次のブックマーク
k前のブックマーク
lあとで読む
eコメント一覧を開く
oページを開く
Was the Philosopher Julia Kristeva a Cold War Collaborator?
Mr. Naha @ acting DAS on Twitter: ".@MR_DIECOCK ㊗㊗㊗㊗㊗㊗㊗㊗ ついにテキサス親父日本事務局のアカウントが凍結。さんざん人種差別、女性差別を撒き散らしてきたヘイトスピーカーなので当然なのだけど、対応遅いです。 #テキサス親父 #藤井実彦 https://t.co/LfwRTmeA0r"
Reddit - Dive into anything
Researchers 'teleport' a quantum gate - Different Impulse