cohei

cohei

Truthies and falseys are defined here as things which can be placed at the condition part of if statement.

C#

https://msdn.microsoft.com/library/system.boolean.aspx

// `bool` keyword is an alias of `System.Boolean`.
bool truthy = true;
Boolean truthy2 = true;

cohei

import Data.Functor

tap :: Functor f => a -> (a -> f b) -> f a
x `tap` action = x <$ action x

-- Only standard output
-- >>> print 1
-- 1

-- Standard output and return value

cohei

import Data.Foldable        (Foldable, toList)
import Data.Functor.Compose (Compose(Compose))
import Data.Tree            (Tree(Node))

flatten :: (Foldable f, Foldable g) => f (g a) -> [a]
flatten = toList . Compose

ex1 = [Just 1, Nothing, Just 2]
ex2 = Just [1,2]
ex3 = [[1],[2]]

cohei

# 参考: http://www.narrativescience.com/blog/automatically-creating-getterssetters-for-backbone-models/

buildProperties = (model) ->
    buildGetter = (name) -> () -> model.get name
    buildSetter = (name) -> (value) -> model.set name, value
    for attribute in _.keys model.defaults
        Object.defineProperty model, attribute,
            get: buildGetter attribute
            set: buildSetter attribute