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Correct way to populate an Array with a Range in Ruby
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You can create an array with a range using splat,
>> a=*(1..10)
=> [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
using Kernel Array method,
Array (1..10)
=> [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
or using to_a
(1..10).to_a
=> [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
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Is a `=default` move constructor equivalent to a member-wise move constructor?
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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?
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109
MSDN says:
A hash code is a numeric value that is used to identify an object
during equal...
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...
App Inventor 2 经典蓝牙(SPP) 硬件接入：hc05 · App Inventor 2 中文网
... App Inventor 2 经典蓝牙(SPP) 硬件接入：hc05
HC05 简单介绍
基本接入代码参考
常见问题解决
Error 515: Not connected to a Bluetooth device.
Error 507: unable to connect. is the device turned...
Bootstrap 3 Navbar Collapse
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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...
std::function and std::bind: what are they, and when should they be used?
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203
std::bind is for partial function application.
That is, suppose you have a function object f w...
How to get the latest tag name in current branch in Git?
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440
You could take a look at git describe, which does something close to what you're asking.
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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...