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What are detached, persistent and transient objects in hibernate?
...esentation in the database and no identifier value is considered transient by Hibernate:
Person person = new Person();
person.setName("Foobar");
// person is in a transient state
A persistent instance has a representation in the database, an identifier value and is associated with a Session. You...
Explaining difference between automaticallyAdjustsScrollViewInsets, extendedLayoutIncludesOpaqueBars
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Starting in iOS7, the view controllers use full-screen layout by default. At the same time, you have more control over how it lays out its views, and that's done with those properties:
edgesForExtendedLayout
Basically, with this property you set which sides of your view can be extende...
Difference between encoding and encryption
...nstance, computer hardware does not manipulate text, it merely manipulates bytes, so a text encoding is a description of how text should be transformed into bytes. Similarly, HTTP does not allow all characters to be transmitted safely, so it may be necessary to encode data using base64 (uses only le...
What is the difference between HTTP_HOST and SERVER_NAME in PHP?
...o ServerName is specified, then the server attempts to deduce the hostname by performing a reverse lookup on the IP address. If no port is specified in the ServerName, then the server will use the port from the incoming request. For optimal reliability and predictability, you should specify an expli...
PHP multidimensional array search by value
...th the same array given in the question. I want user's name from the array by passing id. Function findUserName(40489) should return 'Michael'. How its possible?
– Ashok Gujjar
Aug 31 '18 at 6:40
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What is __pycache__?
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When you run a program in python, the interpreter compiles it to bytecode first (this is an oversimplification) and stores it in the __pycache__ folder. If you look in there you will find a bunch of files sharing the names of the .py files in your project's folder, only their extensions wi...
What is the difference between an int and an Integer in Java and C#?
...ut to summarize:
Objects provide facilities for polymorphism, are passed by reference (or more accurately have references passed by value), and are allocated from the heap. Conversely, primitives are immutable types that are passed by value and are often allocated from the stack.
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difference between scope and namespace of ruby-on-rails 3 routing
...what the difference is between a namespace and a scope in the routing of ruby-on-rails 3.
5 Answers
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What is the difference between graph search and tree search?
...ost search (pick element with lowest path cost), the popular A-star search by choosing the node with lowest cost plus heuristic value, and so on.
The algorithm stated above is actually called tree search. It will visit a state of the underlying problem graph multiple times, if there are multiple di...
How to make jQuery to not round value returned by .width()?
...r than the style of the element. It was introduced in IE4 and is supported by all browsers:
$("#container")[0].getBoundingClientRect().width
Note: For IE8 and below, see the "Browser Compatibility" notes in the MDN docs.
$("#log").html(
$("#container")[0].getBoundingClientRect().width
);...