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Emacs (/ ˈ iː m æ k s / ⓘ), originally named EMACS (an acronym for "Editor Macros"), [1] [2] [3] is a family of text editors that are characterized by their extensibility. [4] The manual for the most widely used variant, [5] GNU Emacs, describes it as "the extensible, customizable, self-documenting, real-time display editor". [6]
With Emacs Speaks Statistics, the user can conveniently edit statistical language commands in one emacs buffer, and execute the code in a second. There are a number of advantages of doing data analysis using Emacs/ESS in this way, rather than interacting with R, S-PLUS or other software directly. First, as indicated above, ESS provides a ...
Multics Emacs is an early implementation of the Emacs text editor. [1] It was written in Maclisp by Bernard Greenberg at Honeywell 's Cambridge Information Systems Lab in 1978, as a successor to the original 1976 TECO implementation of Emacs and a precursor of later GNU Emacs .
In Emacs, the editing area can be split into separate areas called windows, each displaying a different buffer. A buffer is a region of text loaded into Emacs' memory (possibly from a file) which can be saved into a text document. Users can press the default C-x 2 key binding to open a new window. This runs the Emacs Lisp function split-window ...
Column-orientation has a number of advantages. [8] If a search is being done for items matching a particular value in a column of data, only the storage objects corresponding to that data column within the table need to be accessed. A traditional row-based database would have to read the whole table, top to bottom.
GNU Emacs can display or edit a variety of different types of text and adapts its behavior by entering add-on modes called "major modes". There are major modes for many different purposes including editing ordinary text files, the source code of many markup and programming languages , as well as displaying web pages , directory listings and ...
The longest EMACs that have been constructed so far incorporate eleven Ni atoms and have a length of approximately 2 nanometers, although it is estimated that chains with up to 17 metal atoms (4-5 nanometers) could be accessed with currently available ligands. [3] In contrast with EMACs, linear chain compounds are infinite in length. They are ...
Blue highlights show the match results of the regular expression pattern: /r[aeiou]+/ g (lower case r followed by one or more lower-case vowels). A regular expression (shortened as regex or regexp ), [ 1 ] sometimes referred to as rational expression , [ 2 ] [ 3 ] is a sequence of characters that specifies a match pattern in text .