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Functional Programming in Python
ishideo 2020/03/05
fp

functional

python

option

valication

sequence

refactoring
ãƒªãƒ³ã‚¯
JavaScriptã§bind()ã‚’ä½¿ã£ã¦éƒ¨åˆ†é©ç”¨ã™ã‚‹ | POSTD
JavaScriptã®ä¸ã«ã¯ã‚³ãƒ¼ãƒ‰ã‚’ã‚‚ã£ã¨ã‚·ãƒ³ãƒ—ãƒ«ã§è¦‹ã‚„ã™ãã§ãã‚‹ãƒ‘ã‚¿ãƒ¼ãƒ³ãŒã‚ã‚‹ã®ã«ã€ã‚ã¾ã‚Šä½¿ã‚ã‚Œã¦ã„ãªã„ã‚‚ã®ãŒã‚ã‚Šã¾ã™ã€‚çš†ã•ã‚“ã‚‚ Function.prototype.bind ã¯ã”å˜ã˜ã§ã—ã‚‡ã†ã€‚é »ç¹ã«ä½¿ã‚ã‚Œã¦ã„ãŸ var that = this ã‚„ var self = this ã®ä»£ã‚ã‚Šã«ãªã‚‹é–¢æ•°ã§ã™ã€‚ã‚ˆãã‚ã‚‹ã®ãŒä»¥ä¸‹ã®ã‚ˆã†ãªä¾‹ã§ã™ã€‚ this.setup = function () { this.on('event', this.handleEvent.bind(this)); }; ç¬¬1å¼•æ•°ãŒ bind ï¼ˆæŸç¸›ï¼‰ã•ã‚Œã€è¿”ã•ã‚Œã‚‹é–¢æ•°å†…ã§ this ã¨ã—ã¦åƒãã¾ã™ã€‚ã‚ã¾ã‚ŠçŸ¥ã‚‰ã‚Œã¦ã„ã¾ã›ã‚“ãŒ bind ã¯è¤‡æ•°ã®ä»®å¼•æ•°ã‚’å–ã‚‹ã“ã¨ãŒã§ãã€ bind ã•ã‚ŒãŸé–¢æ•°ãŒå‘¼ã³å‡ºã•ã‚Œã‚‹ã¨ bind ã•ã‚Œã‚‹å¾Œç¶šã®ã™ã¹ã¦ã®ä»®å¼•æ•°ã¯ã€ãã®ä»®å¼•æ•°ãƒªã‚¹ãƒˆã®å‰ã«ä»˜åŠ ã•ã‚Œã¾ã™ã€‚ ã¤ã¾ã‚Šä»¥ä¸‹ã®ã‚ˆã†ã«ã€é–¢æ•°ã‚’éƒ¨åˆ†é©ç”¨ã™
ishideo 2017/09/14
javascript

postd

bind

fp
ãƒªãƒ³ã‚¯
anopara
çµ‚äº†ã®ãŠã—ã‚‰ã› ãƒ–ãƒã‚° anopara ã¯ 2022å¹´12æœˆ29æ—¥ ã”ã‚ã«é–‰éŽ–ã—ã¾ã—ãŸã€‚ å…ˆç”Ÿã®æ¬¡å›žä½œã«ã”æœŸå¾…ãã ã•ã„ã€‚ æ¬¡ã®ãƒ–ãƒã‚°ã¯å¤šåˆ†åŒã˜URLã§å†é–‹ã—ã¾ã™ã€‚ è©³ã—ã„ã“ã¨ãŒæ±ºã¾ã£ãŸã‚‰ã“ã¡ã‚‰ã«æ›¸ãã¾ã™ â†’ https://twitter.com/anoparanominal å‰µä½œé–¢é€£ã®æ´»å‹•ã¯ã“ã¡ã‚‰ â†’ https://y9ks.jp çµµã¨ã‹ â†’ https://twitter.com/yuri9000series
ishideo 2017/08/29
fp

functional

programming
ãƒªãƒ³ã‚¯
JavaScript ã§ Y ã‚³ãƒ³ãƒ“ãƒãƒ¼ã‚¿ãƒ¼ã‚’ç†è§£ã™ã‚‹ - Qiita
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ishideo 2017/08/26
javascript

y-combinator

qiita

fp

functional
ãƒªãƒ³ã‚¯
Kotlinã§é–¢æ•°åž‹ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°é¢¨ - Qiita
æœ€è¿‘Rubyã‹ã‚‰Elixirã«æµã‚Œã¦ã€ä½•ã§ã‚‚é–¢æ•°ã§æ›¸ããŸã„åä¾›ã¿ãŸã„ãªåŽ„ä»‹ãªç—…æ°—ã«ãªã£ã¦ã—ã¾ã„ã¾ã—ãŸã€‚ Kotlinè§¦ã£ã¦Næ—¥ç›®ç¨‹åº¦ãªã®ã§ä½•ã‹æ€ã„ã¤ããŸã³ã«æ›¸ãè¶³ã—ã¦ã„ã“ã†ã¨æ€ã„ã¾ã™ Recrucive ä¾‹ãˆã°ã“ã‚“ãªã‚³ãƒ¼ãƒ‰ defmodule String do def multiply(text, count) do multiply(text, count, "") end def multiply(_text, 0, temp) do temp end def multiply(text, count, temp) do multiply(text, count - 1, temp <> text) end end String.multiply("Hello", 10000) # => "HelloHelloHelloHelloHe........ fun main(args: A
ishideo 2017/08/26
kotlin

qiita

fp

functional
ãƒªãƒ³ã‚¯
learning Scalaz â€” learning Scalaz
learning ScalazÂ How many programming languages have been called Lisp in sheepâ€™s clothing? Java brought in GC to familiar C++ like grammar. Although there have been other languages with GC, in 1996 it felt like a big deal because it promised to become a viable alternative to C++. Eventually, people got used to not having to manage memory by hand. JavaScript and Ruby both have been called Lisp in sh
ishideo 2017/08/24
scala

scalaz

fp

functional
ãƒªãƒ³ã‚¯
scalaosusume.md
scalaosusume.md Scala ãŠã™ã™ã‚ãƒã‚¤ãƒ³ãƒˆã”ç´¹ä»‹ ãŠã™ã™ã‚ãƒã‚¤ãƒ³ãƒˆ æ™®æ®µScalaã‚’ä½¿ã£ã¦ã„ã¦ã€ã“ã®æ©Ÿèƒ½ã¯ä¾¿åˆ©ã€ã‚ˆãã§ãã¦ã„ã‚‹ã¨æ„Ÿã˜ã¦ã„ã‚‹ã¨ã“ã‚ã‚’ã”ç´¹ä»‹ã—ã¾ã™ã€‚ æº–å‚™ é–‹ç™ºç’°å¢ƒ plenvã¿ãŸã„ãªã‚„ã¤ã‚ã‚‹ã®? ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã¯ã©ã†ã‚„ã£ã¦ã„ã‚Œã‚‹ã®? cpanfile/Gemfileã¿ãŸã„ãªã®ã‚ã‚‹ã®? è‡ªåˆ†ã§æ›¸ã„ãŸã‚³ãƒ¼ãƒ‰ã®ãƒ“ãƒ«ãƒ‰ã¯ã©ã†ã‚„ã‚‹ã®? å…¨éƒ¨sbtã§ã§ãã‚‹(ã¾ã˜ã‹) ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ« ãŒã‚“ã°ã£ã¦JDKã‚’ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã—ã‚ˆã†! ãã—ã¦sbtã‚’ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã—ã‚ˆã†! $ brew install sbt sbtã®ãƒãƒ¥ãƒ¼ãƒˆãƒªã‚¢ãƒ« Hello, World build.sbt name := "hello" scalaVersion := "2.10.3" Hello.scala object Hello { def main(args: Array[String]) = println(
ishideo 2017/08/21
scala

sbt

fp

functional

gist
ãƒªãƒ³ã‚¯
ã€Œé–¢æ•°åž‹Rubyã€ã¨ã„ã†ç—…(1) - Symbol#to_proc, Object#method - ( ê’ªâŒ“ê’ª) ã‚†ã‚‹ã‚ˆã‚æ—¥è¨˜
ã“ã®è¨˜äº‹ã¯ã€Rubyã‚’æ›¸ãã«ã‚ãŸã£ã¦ã€Œã„ã‹ã«ãƒ–ãƒãƒƒã‚¯ã‚’æ›¸ã‹ãšã«ã™ã¾ã›ã‚‹ã‹ã€ã‚’è¿½æ±‚ã—ãŸã€èª°å¾—ãªé€£è¼‰ã§ã‚ã‚‹ã€‚ ã ã£ã¦ã€ãƒ–ãƒãƒƒã‚¯ã£ã¦æ±šã„ã˜ã‚ƒã‚“ï¼Ÿä»®å¼•æ•°ã®|x|ã¨ã‹ã‚ãƒ¢ã‚¤ã€‚ Symbol#to_proc åŸºæœ¬ä¸ã®åŸºæœ¬ã€‚ instance method Symbol#to_proc ä»¥ä¸‹ã®ã‚ˆã†ãªArrayãŒã‚ã£ã¦ã€ irb(main):003:0> arr = [:user, :entry, :article, :comment, :category] => [:user, :entry, :article, :comment, :category] å„è¦ç´ ã‚’to_sã—ãŸã‹ã£ãŸã‚‰ã€ irb(main):004:0> arr.map{|s| s.to_s} => ["user", "entry", "article", "comment", "category"] ã¨æ›¸ãã‹ã‚ã‚Šã«ã€ irb(main)
ishideo 2017/08/21
ruby

fp

to_proc

method

functional
ãƒªãƒ³ã‚¯
ãƒ–ãƒãƒƒã‚¯ãªã—Rubyã‚’ã‚„ã‚ã†ã¨ã™ã‚‹ã¨é–¢æ•°åž‹ãƒ—ãƒã‚°ãƒ©â€¦ã†ãƒ¼ã‚“ãƒªã‚¹ãƒˆãƒ—ãƒã‚»ãƒƒã€ãˆãƒ¼ã¨æ„Ÿã˜æ„Ÿã˜ - Qiita
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ishideo 2017/08/21
ruby

fp

functional

qiita
ãƒªãƒ³ã‚¯
GitHub - fpinscala/fpinscala: Code, exercises, answers, and hints to go along with the book "Functional Programming in Scala"
This repository contains exercises, hints, and answers for the book Functional Programming in Scala. Along with the book itself, it's the closest you'll get to having your own private functional programming tutor without actually having one. There are two main branches in this repository: first-edition second-edition Be sure to select the branch which matches the edition of the book you are readin
ishideo 2017/08/21
fp

functional

scala

book

github
ãƒªãƒ³ã‚¯
Rubyã®é…åˆ—ã§ã”ã«ã‚‡ã”ã«ã‚‡ã™ã‚‹ã¨ãzipã¨injectã¨evalãŒä¾¿åˆ©ã™ãŽã‚‹ä»¶ - ãƒŸãƒ¼ãƒ ã®æ»éª¸ã‚’å¾…ã¡ãªãŒã‚‰
å…ˆæ—¥ã€Œãƒ–ãƒã‚°æ›¸ããŒä¸èª¿ã€ã¨æ›¸ã„ãŸãŒã€è¨€èªžã®ã‚¢ã‚¦ãƒˆãƒ—ãƒƒãƒˆãŒä¸èª¿ãªã¨ãã¯ã€ãã‚Œä»¥å¤–ã®ã“ã¨ã‚’ã™ã‚‹ã«é™ã‚‹...ãŸã¨ãˆã°é»™ã€…ã¨ãƒ—ãƒã‚°ãƒ©ãƒ ã‚’æ›¸ãã€éŸ³æ¥½ã«æµ¸ã‚‹ã€èº«ä½“ã‚’é…·ä½¿ã™ã‚‹ã€ãªã©ã ã€‚ã¨ã„ã†ã‚ã‘ã§æœˆæ›œæ—¥ã€å¤©æ°—ã¯æ™´ã‚Œãªã‹ã£ãŸã‚‚ã®ã®ã€ç ”ç©¶ã®ãƒ‡ãƒ¼ã‚¿å‡¦ç†ã«ä½¿ã†Rubyã‚¹ã‚¯ãƒªãƒ—ãƒˆã‚’æ›¸ãã¾ãã£ã¦é¬±æ†¤ã‚’æ™´ã‚‰ã—ã¦ã„ãŸã€‚ ã¨ã“ã‚ãŒãã®ãƒ—ãƒã‚°ãƒ©ãƒ è„³ã®ã¾ã¾å¤œã«ã¯VimM#4ã«è¡Œã“ã†ã¨ã—ãŸæ™‚ã€ãã†ã„ãˆã°å†…å®šè€…ï¼“äººã«ã‚ˆã‚‹Skypeä¼šè°ãŒäºˆå®šã•ã‚Œã¦ã„ãŸï¼ˆã¤ã¾ã‚Šãƒ€ãƒ–ãƒ«ãƒ–ãƒƒã‚ãƒ³ã‚°ï¼‰ã“ã¨ã‚’æ€ã„å‡ºã—ã€è‡ªåˆ†ã®é˜¿å‘†ã•ã«å‘†ã‚Œã€æœ¬å½“ã«ã™ã¿ã¾ã›ã‚“ã€ã§ã‚‚ã£ã¦çµå±€æ°—åˆ†ã¯æ™´ã‚Œãšã€‚ å‰ç½®ãï¼ˆãŸã ã®æ—¥è¨˜ï¼‰çµ‚ã‚ã‚Šã€‚ æœ¬é¡Œã€‚ Rubyã®é…åˆ—ã§ã„ã‚ã„ã‚ã„ã˜ã‚‹æ™‚ã«ã€for i in ...ã¨ array.each ã§ã ã„ãŸã„ã§ãã‚‹ã‚“ã ã‘ã©ã€ã‚‚ã¡ã£ã¨ã‚¹ãƒžãƒ¼ãƒˆã«ã‚„ã‚ŠãŸã„ãªãã¨æ€ã£ã¦èª¿ã¹ã¦ã„ãŸã‚‰ã“ã‚Œä½¿ãˆã‚‹ã‚“ã˜ã‚ƒãï¼Ÿã¨æ°—ãŒã¤ã„ãŸã“ã¨ãŒã„ãã¤ã‹ã‚ã‚‹ã€‚zipã¨injectã¨ev
ishideo 2017/08/03
ruby

zip

inject

fp

functional
ãƒªãƒ³ã‚¯
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rubyã§1å¼•æ•°é–¢æ•°ã‚’mapã«æ¸¡ã™å ´åˆã¯ã€ã“ã‚“ãªã‹ã‚“ã˜ã§ãƒ¡ã‚½ãƒƒãƒ‰ã®ã‚·ãƒ³ãƒœãƒ«ã‚’Procã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã¨ã—ã¦æ¸¡ã›ã¦é–¢æ•°ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ã£ã½ã„æ›¸ãæ–¹ãŒã§ãã‚‹ã‚“ã ã‘ã©ã€ irb > ('a'..'c').map &:upcase => ["A", "B", "C"] 2å¼•æ•°ã«ãªã‚‹ã¨ã©ã†æ›¸ã‘ã°ã‚ˆã„ã‚“ã‚„ã‚ã†ã¨æ€ã£ã¦ãŸã®ã ã‘ã©ã€ãƒ‘ãƒ¼ãƒ•ã‚§ã‚¯ãƒˆRubyèªã‚“ã§ãŸã‚‰ã€9.3ç« Methodã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã¨Procã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã®ã¨ã“ã‚ã«ã“ã‚“ãªæ›¸ãæ–¹ãŒè¼‰ã£ã¦ãŸã€‚ irb > (0..10).map &2.method(:*).to_proc => [0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20] ãœã‚“ãœã‚“ç›´æ„Ÿçš„ã˜ã‚ƒãªã„ã‘ã©ã€æ•°å—ã®2ã®ã‚¤ãƒ³ã‚¹ã‚¿ãƒ³ã‚¹ã‹ã‚‰ä¹—ç®—ãƒ¡ã‚½ãƒƒãƒ‰*ã®Methodã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã‚’å–å¾—ã—ã¦ã€Procã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã«å¤‰æ›ã—ã¦æ¸¡ã—ã¦ã‚‹ã€‚æ•°å—ã®2ã¯Mehtodã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã®ãƒ¬ã‚·ãƒ¼ãƒã¨ã—ã¦æŸç¸›
ishideo 2017/08/03
ruby

curry

map

fp

to_proc
ãƒªãƒ³ã‚¯
Rubyã«ã‚ˆã‚‹é–¢æ•°åž‹ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°
å¤ãè‰¯ãå°å¦æ ¡ã®æ™‚ä»£ã€ã“ã®è¡Œã«ã¯å›°æƒ‘ã•ã›ã‚‰ã‚ŒãŸã‚‚ã®ã ã£ãŸã€‚ é”è¡“çš„ãª x ãŒã€åŠ ç®—ã•ã‚ŒãŸã®ã«ç‰ã—ã„ã¾ã¾ã§ã„ã‚‹äº‹ã«ã€‚ ã©ã†ã„ã†ã‚ã‘ã‹ã€ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ã‚’å§‹ã‚ã‚‹ã¨ã€ãã‚Œã«æ§‹ã‚ãªããªã‚‹ã€‚ ã€Œã‚„ã‚Œã‚„ã‚Œã€ãã‚Œã¯é‡å¤§ãªäº‹æŸ„ã˜ã‚ƒãªã„ã—ã€ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ã¨ã¯ç¾å®Ÿã®ãƒ“ã‚¸ãƒã‚¹è¡Œç‚ºãªã‚“ã ã‹ã‚‰ã€ æ•°å¦çš„ãªç´”ç²‹ã•ã«ã¤ã„ã¦ã‚ã‚‰æŽ¢ã—ãªã‚“ã¦å¿…è¦ç„¡ã„ (ãã®è°è«–ãªã‚‰ã€å¤§å¦ã«ã„ã‚‹ç‹‚ã£ãŸé«é¢é‡ŽéƒŽã©ã‚‚ã«ã•ã›ã¦ãŠã‘ã°ã„ã„)ã€ã¨æ€ã£ã¦ã„ãŸã€‚ ã‘ã‚Œã©ã‚‚ã€ãŸã çŸ¥ã‚‰ãªã‹ã£ãŸã ã‘ã§ã€æˆ‘ã€…ãŒé–“é•ã£ã¦ã„ã¦é«˜ã„ä»£å„Ÿã‚’æ”¯æ‰•ã£ã¦ã„ãŸã®ã¯ æ˜Žã‚‰ã‹ã§ã‚ã‚‹ã€‚ Wikipedia ã«ã‚ˆã‚Œã°ã€ã€Œé–¢æ•°åž‹ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°(functional programming, FP)ã¨ã¯ã€ è¨ˆç®—ã‚’æ•°å¦çš„ãªé–¢æ•°ã®è©•ä¾¡ã¨ã¿ãªã—ã€ çŠ¶æ…‹ã‚„å¯å¤‰ãƒ‡ãƒ¼ã‚¿ã‚’é¿ã‘ã‚‹ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ãƒ‘ãƒ©ãƒ€ã‚¤ãƒ ã€ã§ã‚ã‚‹ã€‚ è¨€ã„æ›ãˆã‚‹ã¨ã€é–¢æ•°åž‹ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ã¯ã€ å‰¯ä½œç”¨ãŒç„¡ãå¤‰æ•°ã®å€¤ã‚’å¤‰åŒ–ã•ã›ãªã„ã‚³ãƒ¼ãƒ‰ã‚’æŽ¨å¥¨ã™ã‚‹ã€‚
ishideo 2017/07/29
ruby

fp

functional

oop

lazy
ãƒªãƒ³ã‚¯
Functional Programming with Ruby by Arnau Sanchez - Qiita
This document is compiled from RubyFunctionalProgramming by Arnau Sanchez (tokland) Japanese version is also available. Table of Contents Introduction The theory Functional programming in Ruby Don't update variables Blocks as higher order functions OOP and funcional programming Everything is an expression Recursion Lazy enumerators A practical example Conclusion Presentations Further reading Intro
ishideo 2017/07/29
fp

ruby

functional

qiita
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ishideo 2016/08/12
ruby

functional

immutable

fp

postd
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