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Folds can be regarded as consistently replacing the structural components of a data structure with functions and values. Lists, for example, are built up in many functional languages from two primitives: any list is either an empty list, commonly called nil ([]), or is constructed by prefixing an element in front of another list, creating what is called a cons node ( Cons(X1,Cons(X2,Cons ...
Python syntax and semantics. A snippet of Python code with keywords highlighted in bold yellow font. The syntax of the Python programming language is the set of rules that defines how a Python program will be written and interpreted (by both the runtime system and by human readers). The Python language has many similarities to Perl, C, and Java ...
Business.com – Integrated directory of knowledge resources and companies, that charges a fee for listing review and operates as a pay per click search engine.; Library and Archival Exhibitions on the Web – international database of online exhibitions which is a service of the Smithsonian Institution Libraries.
Stack Overflow. Stack Overflow is a question-and-answer website for computer programmers. It is the flagship site of the Stack Exchange Network. [ 2][ 3][ 4] It was created in 2008 by Jeff Atwood and Joel Spolsky. [ 5][ 6] It features questions and answers on certain computer programming topics. [ 7][ 8][ 9] It was created to be a more open ...
t. e. In computer science, a for-loop or for loop is a control flow statement for specifying iteration. Specifically, a for-loop functions by running a section of code repeatedly until a certain condition has been satisfied. For-loops have two parts: a header and a body. The header defines the iteration and the body is the code that is executed ...
Doubly linked list. In computer science, a doubly linked list is a linked data structure that consists of a set of sequentially linked records called nodes. Each node contains three fields: two link fields ( references to the previous and to the next node in the sequence of nodes) and one data field. The beginning and ending nodes' previous and ...
Web directory. A web directory or link directory is an online list or catalog of websites. That is, it is a directory on the World Wide Web of (all or part of) the World Wide Web. Historically, directories typically listed entries on people or businesses, and their contact information; such directories are still in use today.
This is a list of Hypertext Transfer Protocol (HTTP) response status codes. Status codes are issued by a server in response to a client's request made to the server. It includes codes from IETF Request for Comments (RFCs), other specifications, and some additional codes used in some common applications of the HTTP.