A web service is a service that provides service methods to its clients using either the REST programming paradigm or the SOAP protocol for communication. There are several ways to implement a web service. The most simple way to write a web service would be to write a class and annotate it with the @WebService … Read more
There’s an excellent explantation of virtual memory over on superuser. Simply put, virtual memory is a combination of RAM and disk space that running processes can use. Swap space is the portion of virtual memory that is on the hard disk, used when RAM is full. As for why 32bit CPU is limited to 4gb … Read more
A literal is “any notation for representing a value within source code” (wikipedia) (Contrast this with identifiers, which refer to a value in memory.) Examples: “hey” (a string) false (a boolean) 3.14 (a real number) [1,2,3] (a list of numbers) (x) => x*x (a function) /^1?$|^(11+?)\1+$/ (a regexp) Some things that are not literals: std::cout … Read more
Answering in Clojure terms, here are some examples from Sean Devlin’s screencast: (def a-promise (promise)) (deliver a-promise :fred) (def f (future (some-sexp))) (deref f) Note that in the promise you are explicitly delivering a value that you select in a later computation (:fred in this case). The future, on the other hand, is being consumed … Read more
Every machine learning algorithm with any ability to generalize beyond the training data that it sees has some type of inductive bias, which are the assumptions made by the model to learn the target function and to generalize beyond training data. For example, in linear regression, the model assumes that the output or dependent variable … Read more
Abstract Class An abstract class is a class that is not designed to be instantiated. Abstract classes can have no implementation, some implementation, or all implementation. Abstract classes are designed to allow its subclasses share a common (default) implementation. A (pseudocoded) example of an abstract class would be something like this abstract class Shape { … Read more
It is called the origin. More generally speaking, here are the different parts of a URL, as per Location. (So at least according to how Javascript calls it) protocol://username:password@hostname:port/pathname?search#hash —————————–href—————————— —–host—- ———– origin ————- protocol – protocol scheme of the URL, including the final ‘:’ hostname – domain name port – port number pathname – … Read more
Based on this answer Defined here for Go as: Vendoring is the act of making your own copy of the 3rd party packages your project is using. Those copies are traditionally placed inside each project and then saved in the project repository. The context of this answer is in the Go language, but the concept … Read more
Closures, lambdas, and anonymous functions are not necessarily the same thing. An anonymous function is any function that doesn’t have (or, at least, need) its own name. A closure is a function that can access variables that were in its lexical scope when it was declared, even after they have fallen out of scope. Anonymous … Read more
HTML tag is just opening or closing entity. For example: <p> and </p> are called HTML tags HTML element encompasses opening tag, closing tag, content (optional for content-less tags) Eg: <p>This is the content</p> : This complete thing is called a HTML element