| // square root of x in range of e .. g could be much better guessed . | |
| function sq(x , e , g ){ | |
| g = g || x / 2 | |
| if(Math.abs( g * g - x ) < e ) | |
| return g | |
| else | |
| return sq( x , e , ( g + x / g ) / 2 ) | |
| } |
| function fac(n){ | |
| if( n == 0) return 1 | |
| return n * fac(n-1) | |
| } | |
| function fac2(n){ | |
| return (function tmp( n , a){ | |
| if(n == 0) return a | |
| return tmp(n-1 , a * n) | |
| })(n , 1) |
| import React from 'react'; | |
| import {render} from 'react-dom'; | |
| import {createStore} from 'redux' | |
| const reducer = (state = 0 , action) => | |
| (action.type == 'inc' || action.type == 'dec') ? ((action.type == 'inc' ? state + 1 : state - 1) ) : state | |
| const store = createStore(reducer) | |
| const Counter = ({value , onInc , onDec}) => ( |
| const bsearch = (arr , start , end , el) => { | |
| if(start > end) return -1 | |
| let mid = Math.round((start + end) / 2) | |
| if(mid == el) return mid | |
| else if ( mid < el ) return bsearch(arr , mid + 1 , end , el) | |
| else if ( mid > el ) return bsearch(arr , start , mid - 1 , el) | |
| } | |
| #!/bin/bash | |
| read TPdevice <<< $( xinput | sed -nre '/TouchPad/s/.*id=([0-9]*).*/\1/p' ) | |
| state=$( xinput list-props "$TPdevice" | grep "Device Enabled" | grep -o "[01]$" ) | |
| if [ "$state" -eq '1' ];then | |
| xinput --disable "$TPdevice" | |
| else | |
| xinput --enable "$TPdevice" | |
| fi |
| function setObject(str , value){ | |
| var arr = str.split('.') | |
| var init = window | |
| for(var i = 0 ; i < arr.length-1 ; i++){ | |
| if(!init[arr[i]]) init[arr[i]] = {} | |
| init = init[[arr[i]]] | |
| } | |
| init[arr[arr.length-1]] = value // trick .. | |
| } |
##what are generators##
yield a value, the function pauses until .next(modifiedYieldValue) is calledvar myGen = function*() {
var one = yield 1;
var two = yield 2;
var three = yield 3;
console.log(one, two, three);
| function bubble_sort(arr){ | |
| for(let i = 0 , n = arr.length ; i < n - 1 ; n -= 1){ | |
| for(let ii = i , j = i + 1 ; j < n ; j += 1 , ii += 1){ | |
| if(arr[ii] > arr[j]){ | |
| let temp = arr[ii] | |
| arr[ii] = arr[j] | |
| arr[j] = temp | |
| } | |
| } | |
| } |
| import sys | |
| from urllib.request import urlopen | |
| def fetch_words(url): | |
| words = [] | |
| with urlopen(url) as f: | |
| for line in f: | |
| for word in line.decode('utf-8').split(): | |
| words.append(word) | |
| return words |