Spirin Vladimir spirinvladimir

## why-do-we-need-types-in-javascript.md

      
              1 file
            
          
              0 forks
            
          
              0 comments
            
          
              74 stars
            
          
                tkachenko1503
                / why-do-we-need-types-in-javascript.md
            
            
              Last active
              April 21, 2020 10:35
            
              
                Do we need types in JavaScript? Or maybe not?
              
          
    This is my lightning talk submission to ReactiveConf 2018 https://reactiveconf.com/

In this talk, I want to share my experience gained during the development of frontend applications in several programming languages.
I think it's not a secret for anybody that developing large JavaScript applications is not so easy as it seems at first glance. We all want something simpler and more reliable. Therefore, many developers and even entire companies switch to different, compiled in JavaScript, programming languages. The bulk of such transitions is accounted for TypeScript and flow, and often, developers faced with more problems than they were before.
I wasn't the exception. Moving to a new project, I started using TypeScript and was disappointed.
Luckily in my next project I used ClojureScript and it was like everything is illuminated!

  
## merge-sort-single-fn.clj
(defn merge-sort
  "sorting the given collection with merge-sort"
  [coll]
  (if (or (empty? coll) (= 1 (count coll)))
    coll
    (let [[l1 l2] (split-at (/ (count coll) 2) coll)]
      ;recursive call
      (loop [r [] l1 (merge-sort l1) l2 (merge-sort l2)]
        ;merging
        (cond (empty? l1) (into r l2) ;when l1 is exhausted

## Ridders.hs
module Ridders where

import qualified Data.Map as M
import Control.Monad.State

type R = Double

ridders :: R -> R -> R -> (R -> R) -> Maybe R
ridders ε a b fn = evalState (go a b) M.empty
  where

## combinations.js
/**
 * Copyright 2012 Akseli Palén.
 * Created 2012-07-15.
 * Licensed under the MIT license.
 *
 * <license>
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files
 * (the "Software"), to deal in the Software without restriction,
 * including without limitation the rights to use, copy, modify, merge,

## js.nanorc
## JavaScript
##
syntax "JS" "\.js$" "\.sjs$"

# Reserved Keywords
color yellow "\b(instanceof|typeof|break|do|new|var|case|else|return|void|catch|finally|continue|for|switch|while|this|with|debugger|function|throw|default|if|try|delete|in)\b"

# Future Reserved Words
color brightblue "\b(class|enum|extends|super|import|const|export|implements|let|private|public|yield|static|interface|package|protected)\b"
	(defn merge-sort
	"sorting the given collection with merge-sort"
	[coll]
	(if (or (empty? coll) (= 1 (count coll)))
	coll
	(let [[l1 l2] (split-at (/ (count coll) 2) coll)]
	;recursive call
	(loop [r [] l1 (merge-sort l1) l2 (merge-sort l2)]
	;merging
	(cond (empty? l1) (into r l2) ;when l1 is exhausted
	module Ridders where

	import qualified Data.Map as M
	import Control.Monad.State

	type R = Double

	ridders :: R -> R -> R -> (R -> R) -> Maybe R
	ridders ε a b fn = evalState (go a b) M.empty
	where
	/**
	* Copyright 2012 Akseli Palén.
	* Created 2012-07-15.
	* Licensed under the MIT license.
	*
	* <license>
	* Permission is hereby granted, free of charge, to any person obtaining
	* a copy of this software and associated documentation files
	* (the "Software"), to deal in the Software without restriction,
	* including without limitation the rights to use, copy, modify, merge,
	## JavaScript
	##
	syntax "JS" "\.js$" "\.sjs$"

	# Reserved Keywords
	color yellow "\b(instanceof\|typeof\|break\|do\|new\|var\|case\|else\|return\|void\|catch\|finally\|continue\|for\|switch\|while\|this\|with\|debugger\|function\|throw\|default\|if\|try\|delete\|in)\b"

	# Future Reserved Words
	color brightblue "\b(class\|enum\|extends\|super\|import\|const\|export\|implements\|let\|private\|public\|yield\|static\|interface\|package\|protected)\b"