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How does a Java HashMap handle different objects with the same hash code?
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A hashmap works like this (this is a little bit simplified, but it illustrates the basic mechanism):
It has a number of "buckets" which it uses to store key-value pairs in. Each bucket has a unique number - that's what identifies the bucket. When you put a key-v...
Is it possible to embed animated GIFs in PDFs?
Is it possible to embed animated GIFs in PDFs? And how might I go about such a thing? are there any dangers I should be aware of?
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How to hide element using Twitter Bootstrap and show it using jQuery?
...Bootstrap 4.x
Bootstrap 4.x uses the new .d-none class. Instead of using either .hidden, or .hide if you're using Bootstrap 4.x use .d-none.
<div id="myId" class="d-none">Foobar</div>
To show it: $("#myId").removeClass('d-none');
To hide it: $("#myId").addClass('d-none');
To toggle ...
C++ project organisation (with gtest, cmake and doxygen)
...g a simple vector class in C++. However I would like to get in to good habits from the start rather than trying to modify my workflow later on.
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Creating a config file in PHP
...imple but elegant way is to create a config.php file (or whatever you call it) that just returns an array:
<?php
return array(
'host' => 'localhost',
'username' => 'root',
);
And then:
$configs = include('config.php');
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Best way to use PHP to encrypt and decrypt passwords? [duplicate]
I plan to store foreign account information for my users on my website, aka rapidshare username and passwords, etc... I want to keep information secure, but I know that if I hash their information, I can't retrieve it for later use.
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Modelling an elevator using Object-Oriented Analysis and Design [closed]
... of questions that seem to be commonly-used in interviews and classes when it comes to object-oriented design and analysis. This is one of them; unfortunately, my OOP professor in college never actually gave an answer to it, and so I've been wondering.
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Hibernate Annotations - Which is better, field or property access?
...me business logic to my accessors whenever I need.
Here's an example:
@Entity
public class Person {
@Column("nickName")
public String getNickName(){
if(this.name != null) return generateFunnyNick(this.name);
else return "John Doe";
}
}
Besides, if you throw another libs into the ...
WebRTC - scalable live stream broadcasting / multicasting
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As it was pretty much covered here, what you are trying to do here is not possible with plain, old-fashionned WebRTC (strictly peer-to-peer). Because as it was said earlier, WebRTC connections renegotiate encryption keys to encr...
Detecting that the browser has no mouse and is touch-only
I'm developing a webapp (not a website with pages of interesting text) with a very different interface for touch (your finger hides the screen when you click) and mouse (relies heavily on hover preview).
How can I detect that my user has no mouse to present him the right interface? I plan to leave a...