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How to download and save a file from Internet using Java?
...w FileOutputStream("information.html");
fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
Using transferFrom() is potentially much more efficient than a simple loop that reads from the source channel and writes to this channel. Many operating systems can transfer bytes directly from the sourc...
How can I shuffle an array? [duplicate]
...
1006
Use the modern version of the Fisher–Yates shuffle algorithm:
/**
* Shuffles array in plac...
React.js: Identifying different inputs with one onChange handler
...ct.createClass({
getInitialState: function() {
return {input1: 0, input2: 0};
},
render: function() {
const total = this.state.input1 + this.state.input2;
return (
<div>{total}<br/>
<input type="text" value={this.state.i...
Bootstrap 3 Navbar Collapse
...
Bootstrap 4
It's a native functionality: https://getbootstrap.com/docs/4.0/components/navbar/#responsive-behaviors
You have to use .navbar-expand{-sm|-md|-lg|-xl} classes:
<nav class="navbar navbar-expand-md navbar-light bg-light">
Bootstrap 3
@media (max-width: 991px) {
.navbar-hea...
Is a `=default` move constructor equivalent to a member-wise move constructor?
...
60
Yes both are the same.
But
struct Example {
int a, b;
Example(int mA, int mB) : a{mA},...
What is hashCode used for? Is it unique?
...
109
MSDN says:
A hash code is a numeric value that is used to identify an object
during equal...
Convert dd-mm-yyyy string to date
...#datepicker").val().split("-")
var f = new Date(from[2], from[1] - 1, from[0])
Use regex
var date = new Date("15-05-2018".replace( /(\d{2})-(\d{2})-(\d{4})/, "$2/$1/$3"))
Why not use regex?
Because you know you'll be working on a string made up of three parts, separated by hyphens.
However, i...
游戏中的算法与计算思维：从知识到实战，八课附 .aia · App Inventor 2 中文网
...
课
本课知识与成果
类型
01
画布坐标映射到卡片
逐步增加功能
02
用列表生成成对卡片
逐步增加功能
03
用洗牌理解随机与循环
逐步增加功能
...
How to calculate the time interval between two time strings
I have two times, a start and a stop time, in the format of 10:33:26 (HH:MM:SS). I need the difference between the two times. I've been looking through documentation for Python and searching online and I would imagine it would have something to do with the datetime and/or time modules. I can't ge...
How to pass an object into a state using UI-router?
...
In version 0.2.13, You should be able to pass objects into $state.go,
$state.go('myState', {myParam: {some: 'thing'}})
$stateProvider.state('myState', {
url: '/myState/{myParam:json}',
params: {myParam:...