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Backus–Naur form. In computer science, Backus–Naur form ( / ˌbækəs ˈnaʊər /) (BNF or Backus normal form) is a notation used to describe the syntax of programming languages or other formal languages. It was developed by John Backus and Peter Naur. BNF can be described as a metasyntax notation for context-free grammars.
Shown are the GNOME desktop environment, the GNU Emacs text editor, the GIMP image editor, and the VLC media player. Free software, libre software, libreware [1] [2] or rarely known as freedom-respecting software is computer software distributed under terms that allow users to run the software for any purpose as well as to study, change, and ...
Spell checker. In software, a spell checker (or spelling checker or spell check) is a software feature that checks for misspellings in a text. Spell-checking features are often embedded in software or services, such as a word processor, email client, electronic dictionary, or search engine . It came with my Pea Sea. Miss Steaks I can knot sea.
The software uses images, text, and sound to teach words and grammar by spaced repetition, without translation. Rosetta Stone calls its approach Dynamic Immersion. The software's name and logo allude to the ancient stone slab of the same name on which the Decree of Memphis is inscribed in three writing systems.
Six. Warriner's English Grammar and Composition is a series of textbooks on English grammar and composition by John E. Warriner, consisting initially of six books targeted at grades 6 through 12, in numerous editions, with publication beginning in 1946 and a 7th book added in 1959. [1] Last revised in 1981, the series was still in print at the ...
Context-free language. In formal language theory, a context-free language ( CFL ), also called a Chomsky type-2 language, is a language generated by a context-free grammar (CFG). Context-free languages have many applications in programming languages, in particular, most arithmetic expressions are generated by context-free grammars.
A questionnaire is a research instrument that consists of a set of questions (or other types of prompts) for the purpose of gathering information from respondents through survey or statistical study. A research questionnaire is typically a mix of close-ended questions and open-ended questions. Open-ended, long-term questions offer the ...
Near the end of his presidency, Johnson rejoined the Democratic Party. [42] ^ Chester A. Arthur succeeded to the presidency upon the death of James A. Garfield. [47] ^ Theodore Roosevelt succeeded to the presidency upon the death of William McKinley. [52] ^ Calvin Coolidge succeeded to the presidency upon the death of Warren G. Harding.