otofu-square

import { curry } from "ramda";

export const throwIf = curry(
  (predicate: (_: any) => boolean, error: Error, value: any) => {
    if (predicate(value)) {
      throw error;
    } else {
      return value;
    }
  },

otofu-square

// 文字列の行頭にあるスペースのサイズを取得する
const getSpaceLengthAtBeginningOfLine = (str: string) =>
  str.match(/^(\s*)/)![1].length;

// 末尾の空行を削除する
const trimTailSpaces = (str: string) => str.match(/(.*?)(\s*)$/)![1];

// Number の配列から最小の値を取りだす
// see: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/min
const getMinOfArray = (arr: number[]) => Math.min.apply(null, arr);

otofu-square

import {
  all,
  curry,
  equals,
  isNil,
  mapObjIndexed,
  pipe,
  propSatisfies,
  values,
} from "ramda";

otofu-square

require 'pp'

# block/proc/lambda のおさらい①
#
# - block とは
# メソッドに「処理」を渡したい時に使うもの
def hoge(&block)
  block("World")
end

otofu-square

(defn fibonacchi
  [n]
  (condp = n
    0 1
    1 1
    (+ (fibonacchi (- n 1)) (fibonacchi (- n 2)))))

otofu-square

(defn fizzbuzz
  [n]
  (cond
    (and (= (rem n 3) 0) (= (rem n 5) 0)) "fizzbuzz"
    (= (rem n 5) 0) "buzz"
    (= (rem n 3) 0) "fizz"
    :else (.toString n)))

otofu-square

class QuadraticEquation
  attr_reader :x

  def initialize(a:, b:, c:)
    @a = a.to_f
    @b = b.to_f
    @c = c.to_f
    @x = result
  end

otofu-square

qsort [] = []
qsort (p:xs) = qsort lt ++ [p] ++ qsort gteq
    where lt   = [x | x <- xs, x < p]
          gteq = [x | x <- xs, x >= p]

otofu-square

require 'streamio-ffmpeg'
require 'yaml'

INPUT_PATH  = "~/変換元ディレクトリ"
OUTPUT_PATH = "~/変換後のファイルを保存するディレクトリ"

# YAMLから変換する曲のアーティスト一覧を取得
# example: artists.yml
# - Bireli\ Lagrene
# - John\ Pizzarreli