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Why do I need to override the equals and hashCode methods in Java?
...n conjunction with all hash-based collections, including HashMap, HashSet, and Hashtable.
Let's try to understand it with an example of what would happen if we override equals() without overriding hashCode() and attempt to use a Map.
Say we have a class like this and that two objects of MyClass are...
On a CSS hover event, can I change another div's styling? [duplicate]
...e adjacent sibling combinator (+).
If there are other elements between #a and #b, you can use this: http://jsfiddle.net/u7tYE/1/
#a:hover ~ #b {
background: #ccc
}
<div id="a">Div A</div>
<div>random other elements</div>
<div>random other elements</div>
<...
org.hibernate.MappingException: Could not determine type for: java.util.List, at table: College, for
...ate for all CRUD operations in my project. It doesn't work for One-To-Many and Many-To-One relationships. It gives me the below error.
...
Differences between cookies and sessions?
I am training in web developement and am learning about JSP & Servlets . I have some knowledge of HttpSession - I have used it in some of my sample projects.
...
How can I get Docker Linux container information from within the container itself?
...
Aaaaand Docker 1.12: cat /proc/1/cgroup | grep 'docker/' | tail -1 | sed 's/^.*\///' | cut -c 1-12
– smets.kevin
Jul 27 '16 at 21:05
...
AngularJS $resource RESTful example
...
$resource was meant to retrieve data from an endpoint, manipulate it and send it back. You've got some of that in there, but you're not really leveraging it for what it was made to do.
It's fine to have custom methods on your resource, but you don't want to miss out on the cool features it co...
Cast an instance of a class to a @protocol in Objective-C
... edited Mar 21 '17 at 21:08
Alexander Abakumov
9,59199 gold badges6363 silver badges9999 bronze badges
answered Nov 26 '10 at 1:47
...
How can I get the current user's username in Bash?
...
On the command line, enter
whoami
or
echo "$USER"
To save these values to a variable, do
myvariable=$(whoami)
or
myvariable=$USER
Of course, you don't need to make a variable since that is what the $USER variable is for.
...
Send JSON data via POST (ajax) and receive json response from Controller (MVC)
...success: function (data) {
...
}
});
and in action
public ActionResult AddDomain(IEnumerable<PersonSheets> SendInfo){
...
you can bind your array like this
var SendInfo = [];
$(this).parents('table').find('input:checked').each(function () {
var d...
Create and append dynamically
...id='block'> you've created. You just need to create another <div> and call appendChild().
// Your existing code unmodified...
var iDiv = document.createElement('div');
iDiv.id = 'block';
iDiv.className = 'block';
document.getElementsByTagName('body')[0].appendChild(iDiv);
// Now create an...